{"id":112345,"date":"2025-09-26T14:59:50","date_gmt":"2025-09-26T09:29:50","guid":{"rendered":"https:\/\/www.mygreatlearning.com\/blog\/?page_id=112345"},"modified":"2025-09-26T13:51:09","modified_gmt":"2025-09-26T08:21:09","slug":"java-compiler-tool","status":"publish","type":"page","link":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/","title":{"rendered":"Online Java Compiler"},"content":{"rendered":"\n<!-- START: Modern Java Compiler Block (v4 - Context Menu Re-enabled) -->\n\n<!-- 1. STYLES: All styles are scoped to the main container to avoid conflicts -->\n<style>\n\/* ------------------- *\/\n\/* Basic Setup & Resets *\/\n\/* ------------------- *\/\n.jce-modern-compiler-container {\n    --font-sans: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\";\n    --font-family-code: 'SF Mono', 'Menlo', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;\n    \n    \/* Light Theme *\/\n    --bg-color: #f9f9f9;\n    --panel-bg-color: #ffffff;\n    --text-color: #2d2d2d;\n    --text-color-light: #888888;\n    --border-color: #e5e5e5;\n    --accent-color: #007aff;\n    --accent-color-hover: #0056b3;\n    --icon-color: #555555;\n    --divider-color: #dcdcdc;\n    --header-bg: rgba(255, 255, 255, 0.8);\n    --shadow-color: rgba(0, 0, 0, 0.05);\n    --error-color: #e74c3c;\n    --success-color: #27ae60;\n    --system-color: #e67e22;\n\n    font-family: var(--font-sans);\n    color: var(--text-color);\n    display: flex;\n    flex-direction: column;\n    height: 90vh;\n    min-height: 600px;\n    max-height: 95vh;\n    overflow: hidden;\n    margin: 1rem auto;\n    width: 100%;\n}\n\n.jce-modern-compiler-container.jce-modern-dark-mode {\n    --bg-color: #1c1c1e;\n    --panel-bg-color: #2c2c2e;\n    --text-color: #f5f5f7;\n    --text-color-light: #8d8d93;\n    --border-color: #3a3a3c;\n    --accent-color: #0a84ff;\n    --accent-color-hover: #0060df;\n    --icon-color: #a9a9b0;\n    --divider-color: #38383a;\n    --header-bg: rgba(28, 28, 30, 0.8);\n    --shadow-color: rgba(0, 0, 0, 0.2);\n    --error-color: #e74c3c;\n    --success-color: #2ecc71;\n    --system-color: #f39c12;\n}\n.ace_mobile-button{display:flex;}\n.jce-modern-compiler-container * {\n    margin: 0;\n    padding: 0;\n    box-sizing: border-box;\n}\n\n\/* ------------------- *\/\n\/* Header             *\/\n\/* ------------------- *\/\n.jce-modern-app-header {\n    display: flex;\n    justify-content: space-between;\n    align-items: center;\n    padding: 12px 20px;\n    border: 1px solid var(--border-color);\n    flex-shrink: 0;\n    backdrop-filter: blur(10px);\n    -webkit-backdrop-filter: blur(10px);\n    background-color: #f9f9f9;\n    transition: border-color 0.3s, background-color 0.3s;\n    z-index: 10;\nmin-width: 100%;\n}\n.jce-modern-header-left { display: flex; align-items: center; gap: 16px; }\n.jce-modern-logo { font-size: 20px; font-weight: 600; }\n.jce-modern-header-right { display: flex; align-items: center; gap: 12px; position: relative; }\n\n.jce-modern-action-button {\n    display: flex; align-items: center; gap: 8px;\n    padding: 8px 16px; border-radius: 8px; border: none;\n    cursor: pointer; font-size: 14px; font-weight: 500;\n    transition: background-color 0.2s, transform 0.1s, color 0.3s;\n    font-family: var(--font-sans);\n}\n.jce-modern-action-button:disabled { opacity: 0.6; cursor: not-allowed; }\n.jce-modern-action-button svg { width: 16px; height: 16px; }\n.jce-modern-action-button .jce-modern-button-label { display: none; }\n.jce-modern-run-button { background-color: var(--accent-color); color: white; }\n.jce-modern-run-button svg { stroke-width: 0; }\n.jce-modern-run-button:hover:not(:disabled) { background-color: var(--accent-color-hover); }\n.jce-modern-run-button:active:not(:disabled) { transform: scale(0.97); }\n\n.jce-modern-icon-button {\n    background: transparent; border: 1px solid var(--border-color);\n    color: var(--icon-color); padding: 8px; border-radius: 8px;\n    display: flex; align-items: center; justify-content: center;\n}\n.jce-modern-icon-button svg { stroke: currentColor; stroke-width: 2; }\n\n.jce-modern-theme-toggle svg {\n    width: 20px; height: 20px;\n    fill: var(--icon-color); stroke-width: 0;\n}\n.jce-modern-actions-group { display: flex; align-items: center; gap: 12px; }\n.jce-modern-mobile-menu-toggle { display: none; }\n\n\/* ------------------- *\/\n\/* Main Content Area   *\/\n\/* ------------------- *\/\n.jce-modern-main-content { flex-grow: 1; display: flex; overflow: hidden; position: relative; min-width: 100%; }\n.jce-modern-panel { flex-basis: 0; flex-grow: 1; display: flex; flex-direction: column; overflow: hidden; background-color: var(--panel-bg-color); transition: background-color 0.3s; }\n.jce-modern-panel-header {\n    padding: 10px 20px; font-size: 13px; font-weight: 500; color: var(--text-color-light);\n    border-bottom: 1px solid var(--border-color); text-transform: uppercase; letter-spacing: 0.5px;\n    transition: color 0.3s, border-color 0.3s;\n}\n.jce-modern-tab-bar {\n    display: flex; flex-shrink: 0; border-bottom: 1px solid var(--border-color);\n    overflow-x: auto;\n    -ms-overflow-style: none; scrollbar-width: none;\n}\n.jce-modern-tab-bar::-webkit-scrollbar { display: none; }\n\n.jce-modern-tab-item {\n    display: flex; align-items: center; padding: 10px 15px; border-right: 1px solid var(--border-color);\n    cursor: pointer; font-size: 13px; color: var(--text-color-light); background-color: transparent;\n    position: relative; transition: background-color 0.2s, color 0.2s; white-space: nowrap;\n}\n.jce-modern-tab-item:hover { background-color: var(--panel-bg-color); }\n.jce-modern-tab-item.jce-modern-active { background-color: var(--panel-bg-color); color: var(--text-color); font-weight: 500; }\n.jce-modern-close-tab-btn {\n    margin-left: 10px; background: none; border: none; cursor: pointer; color: var(--icon-color);\n    padding: 2px; border-radius: 50%; display: flex; align-items: center; justify-content: center;\n}\n.jce-modern-close-tab-btn:hover { background-color: var(--divider-color); color: var(--text-color); }\n\n.jce-modern-code-editor-wrapper { flex-grow: 1; position: relative; }\n.jce-modern-code-editor-ace { position: absolute; top: 0; right: 0; bottom: 0; left: 0; font-size: 15px; }\n\n.jce-modern-output-wrapper { flex-grow: 1; position: relative; overflow: hidden;}\n.jce-modern-output-console {\n    padding: 16px; height: 100%; overflow-y: auto; font-family: var(--font-family-code);\n    font-size: 15px; line-height: 1.6; white-space: pre-wrap; word-wrap: break-word; color: var(--text-color);\n}\n.jce-modern-output-console .jce-modern-output-placeholder { color: var(--text-color-light); user-select: none; }\n.jce-modern-output-console .error { color: var(--error-color); }\n.jce-modern-output-console .result { color: var(--success-color); }\n.jce-modern-output-console .system { color: var(--system-color); }\n.jce-modern-output-console .stdout { color: var(--text-color); }\n.jce-modern-output-console .jce-modern-inline-input {\n    background: transparent; border: none; outline: none; border-bottom: 1px solid var(--accent-color);\n    color: var(--text-color); font-family: var(--font-family-code); font-size: 15px; width: 50%; padding: 0px; margin: 5px 2px 3px 2px\n}\n\n\/* ------------------- *\/\n\/* Resizer             *\/\n\/* ------------------- *\/\n.jce-modern-resizer {\n    flex-basis: 6px; flex-shrink: 0; background-color: var(--bg-color);\n    cursor: col-resize; position: relative; transition: background-color 0.3s;\n}\n.jce-modern-resizer:hover::before, .jce-modern-resizer.jce-modern-active::before { background-color: var(--accent-color); }\n.jce-modern-resizer::before {\n    content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);\n    width: 2px; height: 40px; background-color: var(--divider-color); border-radius: 2px; transition: background-color 0.2s;\n}\n\n\/* ------------------- *\/\n\/* Footer              *\/\n\/* ------------------- *\/\n.jce-modern-app-footer {\n    padding: 8px 20px; border-top: 1px solid var(--border-color); display: flex; justify-content: flex-end;\n    align-items: center; font-size: 12px; color: var(--text-color-light); background-color: var(--panel-bg-color);\n    transition: border-color 0.3s, background-color 0.3s; min-width: 100%;\n}\n.jce-modern-status-bar span { margin-left: 15px; }\n\n\/* ------------------------- *\/\n\/* Fullscreen & Mobile Modes *\/\n\/* ------------------------- *\/\n.jce-modern-compiler-container:fullscreen {\n    width: 100% !important; height: 100% !important; max-height: 100% !important;\n    margin: 0 !important; border-radius: 0 !important; border: none !important;\n}\n.jce-modern-compiler-container:fullscreen .jce-modern-app-footer,\n.jce-modern-compiler-container:fullscreen .jce-modern-mobile-nav {\n    display: none;\n}\n.jce-modern-compiler-container:fullscreen .jce-modern-main-content {\n    height: calc(100% - 53px); \/* Adjust height for visible header *\/\n}\n\n.jce-modern-mobile-nav { display: none; }\n\n@media (max-width: 768px) {\n    .jce-modern-app-header { padding: 10px 15px; }\n    .jce-modern-logo { font-size: 18px; }\n    .jce-modern-action-button { padding: 8px 12px; font-size: 13px; }\n    .jce-modern-mobile-menu-toggle { display: flex; }\n    .jce-modern-actions-group {\n        display: none; position: absolute; top: calc(100% + 8px); right: 0; flex-direction: column; gap: 8px;\n        background-color: var(--panel-bg-color); border: 1px solid var(--border-color); border-radius: 12px;\n        padding: 8px; z-index: 20; box-shadow: 0 8px 24px var(--shadow-color);\n    }\n    .jce-modern-actions-group.jce-modern-open { display: flex; }\n    .jce-modern-actions-group .jce-modern-action-button { width: 100%; justify-content: flex-start; gap: 12px; }\n    .jce-modern-actions-group .jce-modern-button-label { display: inline; }\n    .jce-modern-resizer { display: none; }\n    .jce-modern-main-content { flex-direction: column; }\n    .jce-modern-panel { display: none; height: 100%; width: 100%; }\n    .jce-modern-panel.jce-modern-active { display: flex; }\n    .jce-modern-mobile-nav {\n        display: flex; border-top: 1px solid var(--border-color); flex-shrink: 0; background-color: var(--panel-bg-color); width: 100%;\n    }\n    .jce-modern-mobile-nav-button {\n        flex-grow: 1; padding: 14px 10px; text-align: center; background: transparent; border: none;\n        border-bottom: 3px solid transparent; color: var(--text-color-light); font-size: 14px;\n        font-weight: 500; cursor: pointer; transition: color 0.2s, border-color 0.2s;\n    }\n    .jce-modern-mobile-nav-button.jce-modern-active { color: var(--accent-color); border-bottom-color: var(--accent-color); background: #faf7f7; }\n    .jce-modern-app-footer { display: none; }\n}\n<\/style>\n\n<!-- 2. HTML STRUCTURE: The layout of the compiler -->\n<div class=\"jce-modern-compiler-container\" id=\"jce-modern-compiler-container\">\n    <header class=\"jce-modern-app-header\">\n        <div class=\"jce-modern-header-left\">\n            <span class=\"jce-modern-logo\">Java Compiler<\/span>\n        <\/div>\n        <div class=\"jce-modern-header-right\">\n            <div id=\"jce-modern-actions-group\" class=\"jce-modern-actions-group\">\n                <button id=\"jce-modern-upload-button\" class=\"jce-modern-action-button jce-modern-icon-button\" title=\"Upload File\">\n                    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z\"><\/path><\/svg>\n                    <span class=\"jce-modern-button-label\">Upload<\/span>\n                <\/button>\n                <button id=\"jce-modern-download-button\" class=\"jce-modern-action-button jce-modern-icon-button\" title=\"Download Code\">\n                    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4\"\/><polyline points=\"7 10 12 15 17 10\"\/><line x1=\"12\" y1=\"15\" x2=\"12\" y2=\"3\"\/><\/svg>\n                    <span class=\"jce-modern-button-label\">Download<\/span>\n                <\/button>\n                <button id=\"jce-modern-maximize-button\" class=\"jce-modern-action-button jce-modern-icon-button\" title=\"Maximize\">\n                    <svg id=\"jce-modern-maximize-icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M8 3H5a2 2 0 0 0-2 2v3m18 0V5a2 2 0 0 0-2-2h-3m0 18h3a2 2 0 0 0 2-2v-3M3 16v3a2 2 0 0 0 2 2h3\"\/><\/svg>\n                    <span class=\"jce-modern-button-label\">Maximize<\/span>\n                <\/button>\n                <button id=\"jce-modern-clear-button\" class=\"jce-modern-action-button jce-modern-icon-button\" title=\"Clear Output\">\n                    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 6h18\"\/><path d=\"M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2\"\/><path d=\"M10 11v6\"\/><path d=\"M14 11v6\"\/><\/svg>\n                    <span class=\"jce-modern-button-label\">Clear<\/span>\n                <\/button>\n                 <button id=\"jce-modern-theme-toggle\" class=\"jce-modern-action-button jce-modern-icon-button jce-modern-theme-toggle\" title=\"Toggle Theme\">\n                    <svg id=\"jce-modern-theme-icon\" viewBox=\"0 0 24 24\"><path d=\"M12 2.25a.75.75 0 01.75.75v2.25a.75.75 0 01-1.5 0V3a.75.75 0 01.75-.75zM7.5 12a4.5 4.5 0 119 0 4.5 4.5 0 01-9 0zM18.894 6.166a.75.75 0 00-1.06-1.06l-1.591 1.59a.75.75 0 101.06 1.061l1.591-1.59zM21.75 12a.75.75 0 01-.75.75h-2.25a.75.75 0 010-1.5H21a.75.75 0 01.75.75zM17.834 18.894a.75.75 0 001.06-1.06l-1.59-1.591a.75.75 0 10-1.061 1.06l1.59 1.591zM12 18a.75.75 0 01.75.75v2.25a.75.75 0 01-1.5 0v-2.25A.75.75 0 0112 18zM7.834 5.106a.75.75 0 00-1.06 1.06l1.59 1.591a.75.75 0 001.061-1.06l-1.59-1.591zM2.25 12a.75.75 0 01.75-.75h2.25a.75.75 0 010 1.5H3a.75.75 0 01-.75-.75zM6.166 17.834a.75.75 0 00-1.06 1.06l1.591 1.59a.75.75 0 101.06-1.061l-1.591-1.59z\" \/><\/svg>\n                    <span class=\"jce-modern-button-label\">Theme<\/span>\n                <\/button>\n            <\/div>\n            <button id=\"jce-modern-run-button\" class=\"jce-modern-action-button jce-modern-run-button\">\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"currentColor\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M5.25 5.653c0-.856.917-1.398 1.667-.986l11.54 6.348a1.125 1.125 0 010 1.971l-11.54 6.347c-.75.412-1.667-.13-1.667-.985V5.653z\" \/><\/svg>\n                <span id=\"jce-modern-run-button-text\">Run<\/span>\n            <\/button>\n            <button id=\"jce-modern-mobile-menu-toggle\" class=\"jce-modern-action-button jce-modern-icon-button jce-modern-mobile-menu-toggle\" title=\"More actions\">\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><circle cx=\"12\" cy=\"12\" r=\"1\"\/><circle cx=\"19\" cy=\"12\" r=\"1\"\/><circle cx=\"5\" cy=\"12\" r=\"1\"\/><\/svg>\n            <\/button>\n        <\/div>\n    <\/header>\n\n    <main class=\"jce-modern-main-content\">\n        <section id=\"jce-modern-code-panel\" class=\"jce-modern-panel jce-modern-active\">\n             <div id=\"jce-modern-tab-bar\" class=\"jce-modern-tab-bar\"><\/div>\n             <div class=\"jce-modern-code-editor-wrapper\">\n                <div id=\"jce-modern-code-editor-ace\" class=\"jce-modern-code-editor-ace\"><\/div>\n             <\/div>\n        <\/section>\n\n        <div class=\"jce-modern-resizer\" id=\"jce-modern-resizer\"><\/div>\n\n        <section id=\"jce-modern-output-panel\" class=\"jce-modern-panel\">\n            <div class=\"jce-modern-panel-header\">Output<\/div>\n            <div class=\"jce-modern-output-wrapper\">\n                 <div id=\"jce-modern-output-console\" class=\"jce-modern-output-console\">\n                    <span class=\"jce-modern-output-placeholder\">Java environment ready. Click 'Run' to compile and execute.<\/span>\n                 <\/div>\n            <\/div>\n        <\/section>\n    <\/main>\n    \n    <nav class=\"jce-modern-mobile-nav\">\n        <button id=\"jce-modern-mobile-code-btn\" class=\"jce-modern-mobile-nav-button jce-modern-active\">Code<\/button>\n        <button id=\"jce-modern-mobile-output-btn\" class=\"jce-modern-mobile-nav-button\">Output<\/button>\n    <\/nav>\n\n    <footer class=\"jce-modern-app-footer\">\n        <div id=\"jce-modern-status-bar\" class=\"jce-modern-status-bar\">\n            <span>Chars: 0<\/span><span>Words: 0<\/span>\n        <\/div>\n    <\/footer>\n\n    <input type=\"file\" id=\"jce-modern-file-upload\" accept=\".java\" multiple style=\"display: none;\">\n<\/div>\n\n<!-- 3. SCRIPT: Loads the ACE editor and handles all logic -->\n<script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/ace\/1.33.0\/ace.js\"><\/script>\n<script>\n(function() {\n    const container = document.getElementById('jce-modern-compiler-container');\n    if (!container) {\n        console.error('Modern Java Compiler container not found!');\n        return;\n    }\n\n    \/\/ --- SCOPED DOM ELEMENT SELECTION ---\n    const outputConsole = container.querySelector('#jce-modern-output-console');\n    const runButton = container.querySelector('#jce-modern-run-button');\n    const runButtonText = container.querySelector('#jce-modern-run-button-text');\n    const clearButton = container.querySelector('#jce-modern-clear-button');\n    const downloadButton = container.querySelector('#jce-modern-download-button');\n    const uploadButton = container.querySelector('#jce-modern-upload-button');\n    const fileUpload = container.querySelector('#jce-modern-file-upload');\n    const maximizeButton = container.querySelector('#jce-modern-maximize-button');\n    const statusBar = container.querySelector('#jce-modern-status-bar');\n    const resizer = container.querySelector('#jce-modern-resizer');\n    const codePanel = container.querySelector('#jce-modern-code-panel');\n    const outputPanel = container.querySelector('#jce-modern-output-panel');\n    const tabBar = container.querySelector('#jce-modern-tab-bar');\n    const mobileCodeBtn = container.querySelector('#jce-modern-mobile-code-btn');\n    const mobileOutputBtn = container.querySelector('#jce-modern-mobile-output-btn');\n    const mobileMenuToggle = container.querySelector('#jce-modern-mobile-menu-toggle');\n    const actionsGroup = container.querySelector('#jce-modern-actions-group');\n    const themeToggle = container.querySelector('#jce-modern-theme-toggle');\n    const themeIcon = container.querySelector('#jce-modern-theme-icon');\n    const maximizeIcon = container.querySelector('#jce-modern-maximize-icon');\n\n    \/\/ --- STATE MANAGEMENT ---\n    let openFiles = new Map();\n    let activeFile = null;\n\n    \/\/ --- ACE EDITOR SETUP ---\n    ace.config.set('basePath', 'https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/ace\/1.33.0\/');\n    const editor = ace.edit(container.querySelector(\"#jce-modern-code-editor-ace\"));\n    editor.session.setMode(\"ace\/mode\/java\");\n    editor.setOptions({\n        fontSize: \"15px\",\n        showPrintMargin: false,\n        highlightActiveLine: true,\n        tabSize: 4,\n        useSoftTabs: true,\n        wrap: true,\n        enableBasicAutocompletion: true,\n        enableLiveAutocompletion: true,\n        useWorker: false,\n        showFoldWidgets: true\n    });\n    \n    \/\/ *** The custom command to disable the context menu has been REMOVED ***\n    \/\/ This restores the default Ace Editor behavior as requested.\n\n    \/\/ --- HELPER FUNCTIONS ---\n    function addToOutput(text, type = 'stdout') {\n        const span = document.createElement('span');\n        span.className = type;\n        span.textContent = text;\n        outputConsole.appendChild(span);\n        outputConsole.scrollTop = outputConsole.scrollHeight;\n        return span;\n    }\n\n    function requestInputInOutputArea(promptText) {\n        return new Promise((resolve) => {\n            addToOutput(promptText, 'stdout');\n            const inputField = document.createElement('input');\n            inputField.type = 'text';\n            inputField.className = 'jce-modern-inline-input';\n\n            const handleKeyDown = (e) => {\n                if (e.key === 'Enter') {\n                    inputField.removeEventListener('keydown', handleKeyDown);\n                    inputField.disabled = true;\n                    addToOutput(inputField.value + '\\n', 'system');\n                    resolve(inputField.value);\n                }\n            };\n            inputField.addEventListener('keydown', handleKeyDown);\n            \n            outputConsole.appendChild(inputField);\n            inputField.focus();\n            outputConsole.scrollTop = outputConsole.scrollHeight;\n        });\n    }\n\n    \/\/ --- CORE EXECUTION LOGIC ---\n    async function runJava() {\n        if (!activeFile) {\n            addToOutput(\"Error: No active file to run.\", \"error\");\n            return;\n        }\n        runButton.disabled = true;\n        runButtonText.textContent = 'Running...';\n        outputConsole.innerHTML = '';\n        if (window.innerWidth <= 768) { showPanel('output'); }\n\n        const code = editor.getValue();\n        const lines = code.split('\\n');\n        const inputsToCollect = [];\n        \n        const scannerRegex = \/(\\w+)\\.next(Line|Int|Double|Float|Boolean|Byte|Short|Long)\\s*\\(\\s*\\)\/;\n        const promptRegex = \/System\\.out\\.print(ln)?\\s*\\(\\s*\"(.*)\"\\s*\\)\\s*;\/;\n        const promptLineIndexesToRemove = new Set();\n\n        for (let i = 0; i < lines.length; i++) {\n            if (scannerRegex.test(lines[i])) {\n                let prompt = \"Input required: \";\n                if (i > 0 && promptRegex.test(lines[i - 1])) {\n                    const match = lines[i - 1].match(promptRegex);\n                    prompt = match[2].replace(\/\\\\n\/g, '\\n') + ' ';\n                    promptLineIndexesToRemove.add(i - 1);\n                }\n                inputsToCollect.push(prompt);\n            }\n        }\n\n        let allUserInput = '';\n        let codeToSend = code;\n\n        if (inputsToCollect.length > 0) {\n            addToOutput(\">>> Program requires input...\\n\", \"system\");\n            const collectedInputs = [];\n            for (const prompt of inputsToCollect) {\n                const userInput = await requestInputInOutputArea(prompt);\n                collectedInputs.push(userInput);\n            }\n            allUserInput = collectedInputs.join('\\n');\n            codeToSend = lines.filter((_, index) => !promptLineIndexesToRemove.has(index)).join('\\n');\n        }\n\n        addToOutput(\"\\n>>> Compiling and running...\\n\", \"system\");\n        \n        const API_ENDPOINT = \"https:\/\/blogsupport123-java-compiler.hf.space\/api\/run-java\";\n\n        try {\n            const response = await fetch(API_ENDPOINT, {\n                method: 'POST',\n                headers: { 'Content-Type': 'application\/json' },\n                body: JSON.stringify({ code: codeToSend, input: allUserInput }) \n            });\n\n            if (!response.ok) throw new Error(`Server error: ${response.status}`);\n            const result = await response.json();\n            \n            if (result.compileErrors) {\n                addToOutput(`Compilation Failed:\\n${result.compileErrors}`, 'error');\n            } else if (result.runErrors) {\n                addToOutput(`Execution Error:\\n${result.runErrors}`, 'error');\n            } else {\n                addToOutput(result.output, 'stdout');\n                addToOutput('\\n--- Program Finished ---\\n', 'result');\n            }\n        } catch (err) {\n            addToOutput(`\\nNetwork or client-side error: ${err.message}`, 'error');\n        } finally {\n            runButton.disabled = false;\n            runButtonText.textContent = 'Run';\n        }\n    }\n\n    \/\/ --- UI AND TAB MANAGEMENT ---\n    const updateStatus = () => {\n        const text = editor.getValue();\n        const chars = text.length;\n        const words = text.trim().split(\/\\s+\/).filter(Boolean).length;\n        statusBar.innerHTML = `<span>Chars: ${chars}<\/span><span>Words: ${words}<\/span>`;\n    };\n\n    const renderTabs = () => {\n        tabBar.innerHTML = '';\n        if (openFiles.size === 0) {\n            editor.setValue('', -1);\n            editor.setReadOnly(true);\n            updateStatus();\n            return;\n        }\n        editor.setReadOnly(false);\n        openFiles.forEach((content, filename) => {\n            const tab = document.createElement('div');\n            tab.className = 'jce-modern-tab-item';\n            tab.dataset.filename = filename;\n            if (filename === activeFile) tab.classList.add('jce-modern-active');\n            \n            const tabName = document.createElement('span');\n            tabName.textContent = filename;\n            \n            const closeBtn = document.createElement('button');\n            closeBtn.className = 'jce-modern-close-tab-btn';\n            closeBtn.innerHTML = '<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"><\/line><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"><\/line><\/svg>';\n            closeBtn.dataset.filename = filename;\n            \n            tab.appendChild(tabName);\n            tab.appendChild(closeBtn);\n            tabBar.appendChild(tab);\n        });\n    };\n\n    const switchTab = (filename) => {\n        if (!openFiles.has(filename)) return;\n        activeFile = filename;\n        editor.setValue(openFiles.get(filename), -1);\n        editor.focus();\n        updateStatus();\n        renderTabs();\n    };\n\n    const closeTab = (filename) => {\n        openFiles.delete(filename);\n        if (activeFile === filename) {\n            const remainingFiles = Array.from(openFiles.keys());\n            activeFile = remainingFiles.length > 0 ? remainingFiles[0] : null;\n            if (activeFile) {\n                switchTab(activeFile);\n            } else {\n                renderTabs();\n            }\n        } else {\n            renderTabs();\n        }\n    };\n    \n    const addFileContent = (filename, content) => {\n        openFiles.set(filename, content);\n        switchTab(filename);\n    };\n\n    const showPanel = (panelName) => {\n        if (panelName === 'code') {\n            codePanel.classList.add('jce-modern-active');\n            outputPanel.classList.remove('jce-modern-active');\n            mobileCodeBtn.classList.add('jce-modern-active');\n            mobileOutputBtn.classList.remove('jce-modern-active');\n        } else {\n            codePanel.classList.remove('jce-modern-active');\n            outputPanel.classList.add('jce-modern-active');\n            mobileCodeBtn.classList.remove('jce-modern-active');\n            mobileOutputBtn.classList.add('jce-modern-active');\n        }\n    };\n\n    \/\/ --- EVENT LISTENERS ---\n    runButton.addEventListener('click', runJava);\n    editor.commands.addCommand({\n        name: \"runCode\", bindKey: { win: \"Ctrl-Enter\", mac: \"Command-Enter\" }, exec: runJava\n    });\n\n    clearButton.addEventListener('click', () => {\n        outputConsole.innerHTML = '<span class=\"jce-modern-output-placeholder\">Output cleared.<\/span>';\n    });\n\n    editor.session.on('change', () => {\n        updateStatus();\n        if(activeFile) openFiles.set(activeFile, editor.getValue());\n    });\n\n    tabBar.addEventListener('click', (e) => {\n        const target = e.target;\n        if (target.closest('.jce-modern-tab-item')) {\n            if (target.closest('.jce-modern-close-tab-btn')) {\n                const filename = target.closest('.jce-modern-close-tab-btn').dataset.filename;\n                closeTab(filename);\n            } else {\n                const filename = target.closest('.jce-modern-tab-item').dataset.filename;\n                if (filename !== activeFile) switchTab(filename);\n            }\n        }\n    });\n\n    \/\/ Theme\n    const sunIconPath = '<path d=\"M12 2.25a.75.75 0 01.75.75v2.25a.75.75 0 01-1.5 0V3a.75.75 0 01.75-.75zM7.5 12a4.5 4.5 0 119 0 4.5 4.5 0 01-9 0zM18.894 6.166a.75.75 0 00-1.06-1.06l-1.591 1.59a.75.75 0 101.06 1.061l1.591-1.59zM21.75 12a.75.75 0 01-.75.75h-2.25a.75.75 0 010-1.5H21a.75.75 0 01.75.75zM17.834 18.894a.75.75 0 001.06-1.06l-1.59-1.591a.75.75 0 10-1.061 1.06l1.59 1.591zM12 18a.75.75 0 01.75.75v2.25a.75.75 0 01-1.5 0v-2.25A.75.75 0 0112 18zM7.834 5.106a.75.75 0 00-1.06 1.06l1.59 1.591a.75.75 0 001.061-1.06l-1.59-1.591zM2.25 12a.75.75 0 01.75-.75h2.25a.75.75 0 010 1.5H3a.75.75 0 01-.75-.75zM6.166 17.834a.75.75 0 00-1.06 1.06l1.591 1.59a.75.75 0 101.06-1.061l-1.591-1.59z\" \/>';\n    const moonIconPath = '<path fill-rule=\"evenodd\" d=\"M9.528 1.718a.75.75 0 01.162.819A8.97 8.97 0 009 6a9 9 0 009 9 8.97 8.97 0 004.463-.69a.75.75 0 01.981.98 10.503 10.503 0 01-9.694 6.46c-5.799 0-10.5-4.701-10.5-10.5 0-3.818 2.06-7.174 5.166-9.042a.75.75 0 01.819.162z\" clip-rule=\"evenodd\" \/>';\n    themeToggle.addEventListener('click', () => {\n        container.classList.toggle('jce-modern-dark-mode');\n        const isDarkMode = container.classList.contains('jce-modern-dark-mode');\n        themeIcon.innerHTML = isDarkMode ? sunIconPath : moonIconPath;\n        editor.setTheme(isDarkMode ? 'ace\/theme\/tomorrow_night' : 'ace\/theme\/textmate');\n    });\n\n    \/\/ Download\/Upload\n    downloadButton.addEventListener('click', () => {\n        if (!activeFile) return;\n        const blob = new Blob([openFiles.get(activeFile)], { type: 'text\/java' });\n        const link = document.createElement('a');\n        link.href = URL.createObjectURL(blob);\n        link.download = activeFile;\n        link.click();\n        URL.revokeObjectURL(link.href);\n    });\n    uploadButton.addEventListener('click', () => fileUpload.click());\n    fileUpload.addEventListener('change', (event) => {\n        for (const file of event.target.files) {\n            const reader = new FileReader();\n            reader.onload = (e) => addFileContent(file.name, e.target.result);\n            reader.readAsText(file);\n        }\n        event.target.value = null;\n    });\n\n    \/\/ Fullscreen\n    const maximizeIconPath = '<path d=\"M8 3H5a2 2 0 0 0-2 2v3m18 0V5a2 2 0 0 0-2-2h-3m0 18h3a2 2 0 0 0 2-2v-3M3 16v3a2 2 0 0 0 2 2h3\"\/>';\n    const minimizeIconPath = '<path d=\"M8 3v3a2 2 0 0 1-2 2H3m18 0h-3a2 2 0 0 1-2-2V3m0 18v-3a2 2 0 0 1 2-2h3M3 16h3a2 2 0 0 1 2 2v3\"\/>';\n    \n    function toggleFullscreen() {\n        if (!document.fullscreenElement) {\n            container.requestFullscreen().catch(err => {\n                alert(`Error attempting to enable full-screen mode: ${err.message} (${err.name})`);\n            });\n        } else {\n            document.exitFullscreen();\n        }\n    }\n    \n    function updateFullscreenUI() {\n        if (document.fullscreenElement === container) {\n            maximizeButton.title = 'Minimize';\n            maximizeIcon.innerHTML = minimizeIconPath;\n        } else {\n            maximizeButton.title = 'Maximize';\n            maximizeIcon.innerHTML = maximizeIconPath;\n        }\n        editor.resize();\n    }\n    maximizeButton.addEventListener('click', toggleFullscreen);\n    document.addEventListener('fullscreenchange', updateFullscreenUI);\n\n\n    \/\/ Resizer\n    resizer.addEventListener('mousedown', () => {\n        resizer.classList.add('jce-modern-active');\n        document.body.style.cursor = 'col-resize';\n        document.body.style.userSelect = 'none';\n        const onMouseMove = (e) => {\n            const totalWidth = resizer.parentElement.offsetWidth;\n            const newCodePanelWidth = e.clientX - resizer.parentElement.getBoundingClientRect().left;\n            if (newCodePanelWidth > 150 && totalWidth - newCodePanelWidth > 150) {\n                codePanel.style.flexBasis = `${newCodePanelWidth}px`;\n                outputPanel.style.flexBasis = `${totalWidth - newCodePanelWidth}px`;\n                editor.resize();\n            }\n        };\n        const onMouseUp = () => {\n            resizer.classList.remove('jce-modern-active');\n            document.body.style.cursor = '';\n            document.body.style.userSelect = '';\n            document.removeEventListener('mousemove', onMouseMove);\n            document.removeEventListener('mouseup', onMouseUp);\n        };\n        document.addEventListener('mousemove', onMouseMove);\n        document.addEventListener('mouseup', onMouseUp);\n    });\n\n    \/\/ Mobile UI\n    mobileCodeBtn.addEventListener('click', () => showPanel('code'));\n    mobileOutputBtn.addEventListener('click', () => showPanel('output'));\n    mobileMenuToggle.addEventListener('click', (e) => {\n        e.stopPropagation();\n        actionsGroup.classList.toggle('jce-modern-open');\n    });\n    document.addEventListener('click', (e) => {\n        if (!actionsGroup.contains(e.target) && !mobileMenuToggle.contains(e.target)) {\n            actionsGroup.classList.remove('jce-modern-open');\n        }\n    });\n\n    \/\/ --- INITIALIZATION ---\n    function initialize() {\n        const defaultCode = `import java.util.Scanner;\n\n\/\/ The main class name must be 'Main' for this compiler\nclass Main {\n    public static void main(String[] args) {\n        \/\/ This program will prompt for input in the output panel.\n        Scanner sc = new Scanner(System.in);\n        \n        System.out.println(\"Enter your name:\");\n        String name = sc.nextLine();\n        \n        System.out.println(\"Enter your age:\");\n        int age = sc.nextInt();\n        \n        System.out.println(\"\\\\n--- Output ---\");\n        System.out.println(\"Hello, \" + name + \"! You will be \" + (age + 10) + \" in ten years.\");\n        \n        sc.close();\n    }\n}`;\n        addFileContent('Main.java', defaultCode);\n        editor.setTheme('ace\/theme\/textmate');\n    }\n    \n    initialize();\n\n})();\n<\/script>\n\n<!-- END: Modern Java Compiler Block (v4 - Context Menu Re-enabled) -->\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h1 class=\"wp-block-heading\" id=\"online-java-compiler\">Online Java Compiler<\/h1>\n\n\n\n<p>This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, a dynamic output panel, and a customizable workspace to fit your needs.<\/p>\n\n\n\n<p><strong>Features:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Clean, modern interface with light and dark themes.<\/li>\n\n\n\n<li>Real-time Java code execution with compiled output displayed in the console.<\/li>\n\n\n\n<li>Code editor with syntax highlighting, autocompletion, and error checking.<\/li>\n\n\n\n<li>Support for multiple tabs for different code files, with easy navigation.<\/li>\n\n\n\n<li>Integrated support for input prompts and user interaction within the output console.<\/li>\n\n\n\n<li>File upload and download functionality for Java code.<\/li>\n\n\n\n<li>Mobile-friendly interface with responsive navigation and actions.<\/li>\n\n\n\n<li>Fullscreen support for an immersive coding experience.<\/li>\n<\/ul>\n\n\n\n<p>This editor is flexible and user-friendly, suitable for both beginners and advanced developers.<\/p>\n\n\n\n<p><strong>Also Check:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.mygreatlearning.com\/blog\/java-interview-questions\/\">Java Interview Questions and Answers<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.mygreatlearning.com\/blog\/java-project-ideas\/\">Java Project Ideas for All Levels (With Source Code)<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.mygreatlearning.com\/blog\/java-quiz\/\">Java Quiz and MCQs<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.mygreatlearning.com\/blog\/java-exercise\/\">Java Exercise and Practice Questions<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.mygreatlearning.com\/blog\/java-developer-guide\/\">How to Become a Java Developer<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.mygreatlearning.com\/blog\/oops-concepts-in-java\/\">OOPs in Java<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.mygreatlearning.com\/blog\/data-structures-using-java\/\">Java Data Structures<\/a><\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, dynamic output panel and customizable workspace to fit your needs.<\/p>\n","protected":false},"author":41,"featured_media":112360,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25860],"tags":[36826],"class_list":["post-112345","page","type-page","status-publish","has-post-thumbnail","hentry","category-software","tag-java"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Online Java Compiler<\/title>\n<meta name=\"description\" content=\"This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, dynamic output panel and customizable workspace to fit your needs.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Online Java Compiler\" \/>\n<meta property=\"og:description\" content=\"This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, dynamic output panel and customizable workspace to fit your needs.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/\" \/>\n<meta property=\"og:site_name\" content=\"Great Learning Blog: Free Resources what Matters to shape your Career!\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/GreatLearningOfficial\/\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1191\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@Great_Learning\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/\"},\"author\":{\"name\":\"Great Learning Editorial Team\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#\\\/schema\\\/person\\\/6f993d1be4c584a335951e836f2656ad\"},\"headline\":\"Online Java Compiler\",\"datePublished\":\"2025-09-26T09:29:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/\"},\"wordCount\":189,\"publisher\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/online-java-compiler.webp\",\"keywords\":[\"java\"],\"articleSection\":[\"IT\\\/Software Development\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/\",\"url\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/\",\"name\":\"Online Java Compiler\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/online-java-compiler.webp\",\"datePublished\":\"2025-09-26T09:29:50+00:00\",\"description\":\"This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, dynamic output panel and customizable workspace to fit your needs.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/online-java-compiler.webp\",\"contentUrl\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/online-java-compiler.webp\",\"width\":1191,\"height\":628,\"caption\":\"Online Java Compiler\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/java-compiler-tool\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Blog\",\"item\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Online Java Compiler\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/\",\"name\":\"Great Learning Blog\",\"description\":\"Learn, Upskill &amp; Career Development Guide and Resources\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#organization\"},\"alternateName\":\"Great Learning\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#organization\",\"name\":\"Great Learning\",\"url\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/06\\\/GL-Logo.jpg\",\"contentUrl\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/06\\\/GL-Logo.jpg\",\"width\":900,\"height\":900,\"caption\":\"Great Learning\"},\"image\":{\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/GreatLearningOfficial\\\/\",\"https:\\\/\\\/x.com\\\/Great_Learning\",\"https:\\\/\\\/www.instagram.com\\\/greatlearningofficial\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/school\\\/great-learning\\\/\",\"https:\\\/\\\/in.pinterest.com\\\/greatlearning12\\\/\",\"https:\\\/\\\/www.youtube.com\\\/user\\\/beaconelearning\\\/\"],\"description\":\"Great Learning is a leading global ed-tech company for professional training and higher education. It offers comprehensive, industry-relevant, hands-on learning programs across various business, technology, and interdisciplinary domains driving the digital economy. These programs are developed and offered in collaboration with the world's foremost academic institutions.\",\"email\":\"info@mygreatlearning.com\",\"legalName\":\"Great Learning Education Services Pvt. Ltd\",\"foundingDate\":\"2013-11-29\",\"numberOfEmployees\":{\"@type\":\"QuantitativeValue\",\"minValue\":\"1001\",\"maxValue\":\"5000\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/#\\\/schema\\\/person\\\/6f993d1be4c584a335951e836f2656ad\",\"name\":\"Great Learning Editorial Team\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/02\\\/unnamed.webp\",\"url\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/02\\\/unnamed.webp\",\"contentUrl\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/02\\\/unnamed.webp\",\"caption\":\"Great Learning Editorial Team\"},\"description\":\"The Great Learning Editorial Staff includes a dynamic team of subject matter experts, instructors, and education professionals who combine their deep industry knowledge with innovative teaching methods. Their mission is to provide learners with the skills and insights needed to excel in their careers, whether through upskilling, reskilling, or transitioning into new fields.\",\"sameAs\":[\"https:\\\/\\\/www.mygreatlearning.com\\\/\",\"https:\\\/\\\/in.linkedin.com\\\/school\\\/great-learning\\\/\",\"https:\\\/\\\/x.com\\\/https:\\\/\\\/twitter.com\\\/Great_Learning\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCObs0kLIrDjX2LLSybqNaEA\"],\"award\":[\"Best EdTech Company of the Year 2024\",\"Education Economictimes Outstanding Education\\\/Edtech Solution Provider of the Year 2024\",\"Leading E-learning Platform 2024\"],\"url\":\"https:\\\/\\\/www.mygreatlearning.com\\\/blog\\\/author\\\/greatlearning\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Online Java Compiler","description":"This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, dynamic output panel and customizable workspace to fit your needs.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/","og_locale":"en_US","og_type":"article","og_title":"Online Java Compiler","og_description":"This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, dynamic output panel and customizable workspace to fit your needs.","og_url":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/","og_site_name":"Great Learning Blog: Free Resources what Matters to shape your Career!","article_publisher":"https:\/\/www.facebook.com\/GreatLearningOfficial\/","og_image":[{"width":1191,"height":628,"url":"http:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp","type":"image\/webp"}],"twitter_card":"summary_large_image","twitter_site":"@Great_Learning","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/#article","isPartOf":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/"},"author":{"name":"Great Learning Editorial Team","@id":"https:\/\/www.mygreatlearning.com\/blog\/#\/schema\/person\/6f993d1be4c584a335951e836f2656ad"},"headline":"Online Java Compiler","datePublished":"2025-09-26T09:29:50+00:00","mainEntityOfPage":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/"},"wordCount":189,"publisher":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/#primaryimage"},"thumbnailUrl":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp","keywords":["java"],"articleSection":["IT\/Software Development"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/","url":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/","name":"Online Java Compiler","isPartOf":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/#primaryimage"},"image":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/#primaryimage"},"thumbnailUrl":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp","datePublished":"2025-09-26T09:29:50+00:00","description":"This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, dynamic output panel and customizable workspace to fit your needs.","breadcrumb":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/#primaryimage","url":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp","contentUrl":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp","width":1191,"height":628,"caption":"Online Java Compiler"},{"@type":"BreadcrumbList","@id":"https:\/\/www.mygreatlearning.com\/blog\/java-compiler-tool\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Blog","item":"https:\/\/www.mygreatlearning.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Online Java Compiler"}]},{"@type":"WebSite","@id":"https:\/\/www.mygreatlearning.com\/blog\/#website","url":"https:\/\/www.mygreatlearning.com\/blog\/","name":"Great Learning Blog","description":"Learn, Upskill &amp; Career Development Guide and Resources","publisher":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/#organization"},"alternateName":"Great Learning","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.mygreatlearning.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.mygreatlearning.com\/blog\/#organization","name":"Great Learning","url":"https:\/\/www.mygreatlearning.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.mygreatlearning.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2022\/06\/GL-Logo.jpg","contentUrl":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2022\/06\/GL-Logo.jpg","width":900,"height":900,"caption":"Great Learning"},"image":{"@id":"https:\/\/www.mygreatlearning.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/GreatLearningOfficial\/","https:\/\/x.com\/Great_Learning","https:\/\/www.instagram.com\/greatlearningofficial\/","https:\/\/www.linkedin.com\/school\/great-learning\/","https:\/\/in.pinterest.com\/greatlearning12\/","https:\/\/www.youtube.com\/user\/beaconelearning\/"],"description":"Great Learning is a leading global ed-tech company for professional training and higher education. It offers comprehensive, industry-relevant, hands-on learning programs across various business, technology, and interdisciplinary domains driving the digital economy. These programs are developed and offered in collaboration with the world's foremost academic institutions.","email":"info@mygreatlearning.com","legalName":"Great Learning Education Services Pvt. Ltd","foundingDate":"2013-11-29","numberOfEmployees":{"@type":"QuantitativeValue","minValue":"1001","maxValue":"5000"}},{"@type":"Person","@id":"https:\/\/www.mygreatlearning.com\/blog\/#\/schema\/person\/6f993d1be4c584a335951e836f2656ad","name":"Great Learning Editorial Team","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2022\/02\/unnamed.webp","url":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2022\/02\/unnamed.webp","contentUrl":"https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2022\/02\/unnamed.webp","caption":"Great Learning Editorial Team"},"description":"The Great Learning Editorial Staff includes a dynamic team of subject matter experts, instructors, and education professionals who combine their deep industry knowledge with innovative teaching methods. Their mission is to provide learners with the skills and insights needed to excel in their careers, whether through upskilling, reskilling, or transitioning into new fields.","sameAs":["https:\/\/www.mygreatlearning.com\/","https:\/\/in.linkedin.com\/school\/great-learning\/","https:\/\/x.com\/https:\/\/twitter.com\/Great_Learning","https:\/\/www.youtube.com\/channel\/UCObs0kLIrDjX2LLSybqNaEA"],"award":["Best EdTech Company of the Year 2024","Education Economictimes Outstanding Education\/Edtech Solution Provider of the Year 2024","Leading E-learning Platform 2024"],"url":"https:\/\/www.mygreatlearning.com\/blog\/author\/greatlearning\/"}]}},"uagb_featured_image_src":{"full":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp",1191,628,false],"thumbnail":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler-150x150.webp",150,150,true],"medium":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler-300x158.webp",300,158,true],"medium_large":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler-768x405.webp",768,405,true],"large":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler-1024x540.webp",1024,540,true],"1536x1536":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp",1191,628,false],"2048x2048":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler.webp",1191,628,false],"web-stories-poster-portrait":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler-640x628.webp",640,628,true],"web-stories-publisher-logo":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler-96x96.webp",96,96,true],"web-stories-thumbnail":["https:\/\/www.mygreatlearning.com\/blog\/wp-content\/uploads\/2025\/09\/online-java-compiler-150x79.webp",150,79,true]},"uagb_author_info":{"display_name":"Great Learning Editorial Team","author_link":"https:\/\/www.mygreatlearning.com\/blog\/author\/greatlearning\/"},"uagb_comment_info":0,"uagb_excerpt":"This online Java editor and compiler allows you to run Java programs right from your browser. It\u2019s easy to use with real-time code execution, dynamic output panel and customizable workspace to fit your needs.","_links":{"self":[{"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/pages\/112345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/comments?post=112345"}],"version-history":[{"count":30,"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/pages\/112345\/revisions"}],"predecessor-version":[{"id":112680,"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/pages\/112345\/revisions\/112680"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/media\/112360"}],"wp:attachment":[{"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/media?parent=112345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/categories?post=112345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mygreatlearning.com\/blog\/wp-json\/wp\/v2\/tags?post=112345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}