TOP JAVA INTERVIEW QUESTIONS

[{"selector":"#anim-8fac59c6-dc6f-492d-9ece-4b28d15db352","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":1200,"direction":"normal","duration":1000,"easing":"cubic-bezier(0.215, 0.61, 0.355, 1)","fill":"both"}] JAVA INTERVIEW QUESTIONS

[{"selector":"#anim-09cc77d4-706a-4e21-b3ff-109a115e9dc0","keyframes":{"opacity":[0,1]},"delay":0,"direction":"normal","duration":1200,"easing":"cubic-bezier(0.39, 0.575, 0.565, 1)","fill":"both"}] [{"selector":"#anim-a519644d-51e4-4a8e-b8c1-924bde301f08","keyframes":{"transform":["translate3d(0px, 75%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-0e7fd7cc-0131-4607-af3c-2d20798af05f","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"direction":"normal","duration":1000,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-bc62ad71-43df-493b-a2be-0efb5d4b5dd2","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-017108fd-f346-470c-b1d0-8d98c6c7ca02","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-69843c88-4ae5-4b71-ab70-8a37ce9b53df","keyframes":{"opacity":[0,1]},"delay":800,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-8deeae47-3cac-45a8-b1e8-0582da72c7ab","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-53a41801-8094-4e8e-ab76-7d7224af2507","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-1b33751a-e99f-47f7-9db0-5bebd909651b","keyframes":{"opacity":[0,1]},"delay":1050,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-60c5d12e-5cb3-40fd-a2bc-50a0d96bbc7a","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] WHAT IS A THREAD? Threads allows a program to operate more efficiently by doing multiple things at the same time. 5

[{"selector":"#anim-4d910341-ec0b-4c18-9cfb-0a49a863c525","keyframes":{"opacity":[0,1]},"delay":0,"direction":"normal","duration":1200,"easing":"cubic-bezier(0.39, 0.575, 0.565, 1)","fill":"both"}] [{"selector":"#anim-4a724122-269f-48b8-9365-291652c61e35","keyframes":{"transform":["translate3d(0px, 75%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-098189f4-0a00-4494-b399-8984185811b2","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-469be761-9297-4987-ae78-65a4b1be00e2","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-8360049f-87cc-4b27-aac3-5e09c8471323","keyframes":{"opacity":[0,1]},"delay":800,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-d50ce62f-8b8c-416e-8fec-f0d9ef2af72f","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-684f6549-96da-43fa-b1d6-2f6c60ad3622","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-8ea8047c-e2e6-4571-bcf8-63cf0ae98b14","keyframes":{"opacity":[0,1]},"delay":1050,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-d7f2839a-8f5f-40a3-a7f2-19d04e93c6dc","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"direction":"normal","duration":1000,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-a749fd70-807b-45a3-a131-d51037a9f07c","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] WHAT IS INHERITANCE? The process by which one class acquires the properties and functionalities of another class is called inheritance. 4

[{"selector":"#anim-684907da-9356-44fe-9b22-63eab2e4a16b","keyframes":{"opacity":[0,1]},"delay":0,"direction":"normal","duration":1200,"easing":"cubic-bezier(0.39, 0.575, 0.565, 1)","fill":"both"}] [{"selector":"#anim-69edd6b7-9e85-4bc7-9000-33a21d8528ce","keyframes":{"transform":["translate3d(0px, 75%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-d3c3f76c-6af1-48f7-8e07-d1dd78235922","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-d7785735-f588-4314-bb57-3f0f0309ef62","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-e71626be-ec4b-460c-a9d6-86c675025728","keyframes":{"opacity":[0,1]},"delay":800,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-713cdb31-1724-4fce-8def-4ca4b3fd8e8c","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-820dc6fb-0f4f-4f88-b879-c4cf8a775390","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-c495bc96-7bf2-4e3a-addd-1ddc088040c5","keyframes":{"opacity":[0,1]},"delay":1050,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-49658e9b-084b-458f-bd24-adb179266e0d","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"direction":"normal","duration":1000,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-cc4ae2cd-277f-4dca-a42b-8cad9d8f5320","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] WHAT IS A COLLECTION? Collections are like containers that group multiple objects in a single unit and help to manipulate them together. 3

[{"selector":"#anim-e4551df2-4859-4d93-8b46-89b8b34f61f6","keyframes":{"opacity":[0,1]},"delay":0,"direction":"normal","duration":1200,"easing":"cubic-bezier(0.39, 0.575, 0.565, 1)","fill":"both"}] [{"selector":"#anim-11982f31-1e5c-46f4-a07b-872ac3f5522b","keyframes":{"transform":["translate3d(0px, 75%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-903f9091-5347-46f1-951c-1d1054ec6b01","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-6089dd8e-1245-40ab-bce2-eed0aa6ec5e6","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-48f35018-7d4a-45b2-8161-75a9e0919f39","keyframes":{"opacity":[0,1]},"delay":800,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-d8ef756a-1ce8-4081-9c29-7d20a79cf833","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-cda043c7-5f91-4095-b0be-dddf0f84977e","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-cfb54c05-4d88-480a-9f2f-a401634adf22","keyframes":{"opacity":[0,1]},"delay":1050,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-14cc8789-e979-4ba8-84a7-63e858e07f08","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-23c6ecea-cbac-49eb-971a-bdf1222e2745","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"direction":"normal","duration":1000,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] 2 WHAT IS ABSTRACTION? It helps in hiding an object's properties and methods from other programs through the use of access modifiers.

[{"selector":"#anim-cc6a47dd-6123-4af9-829d-eb9d618ebd4b","keyframes":{"opacity":[0,1]},"delay":0,"direction":"normal","duration":1200,"easing":"cubic-bezier(0.39, 0.575, 0.565, 1)","fill":"both"}] [{"selector":"#anim-9674c6aa-a6d5-4d71-a227-e9ef9c6f640a","keyframes":{"transform":["translate3d(0px, 75%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-7851e866-4306-46b4-8fd7-7a6a2dbb0c53","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-8eb991ab-7691-457f-b5ac-e231f5ae4906","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":800,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-34567063-b69e-4567-b8bb-b51fa904b197","keyframes":{"opacity":[0,1]},"delay":800,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-89fa5158-8446-42a9-85ce-8d8417f3d68e","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-3f6420fe-38d0-4dd3-99d0-3253fdf6510d","keyframes":{"transform":["translate3d(100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1050,"direction":"normal","duration":800,"easing":"cubic-bezier(0.55, 0.055, 0.675, 0.19)","fill":"both"}] [{"selector":"#anim-a0a862fd-7296-4614-9c60-10d435c1b4b8","keyframes":{"opacity":[0,1]},"delay":1050,"direction":"normal","duration":300,"easing":"linear","fill":"both"}] [{"selector":"#anim-cb023330-544c-4a77-90e4-0355277a60cb","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"direction":"normal","duration":1000,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] [{"selector":"#anim-8ac77f13-30ca-4204-8d32-2d997438e4a9","keyframes":{"transform":["translate3d(0px, 100%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"direction":"normal","duration":800,"easing":"cubic-bezier(0.645, 0.045, 0.355, 1)","fill":"both"}] WHAT IS AN EXCEPTION? An exception is an event, which occurs during program execution , that disrupts the normal flow of the program’s instructions. 1