Java Interview Questions: Your Tech Interview

What is Java?

[{"selector":"#anim-a06566e5-0b5c-4a49-b84b-3b6c8633b674","keyframes":[{"offset":0,"transform":"translate3d(0, -450.35854%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -126.640821448%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -43.054276424%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -16.167871586%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -7.025593224%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-3cb536ae-9391-4aa0-9e1d-9a689593b564 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-31.249999886225726%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-0f7b1623-019b-4c1f-9d87-2b6f740f5be3","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d90ba485-8e60-4024-adbd-28d2daf1eccc","keyframes":{"transform":["translate3d(0px, 129.92205%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-de4c267b-cf0f-4223-b0bd-bd57a0aeeeee","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d122139b-912a-4af8-acf2-936941b69a96","keyframes":{"transform":["translate3d(0px, 121.54109%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Explain OOP Concepts

[{"selector":"#anim-327c3724-b099-4124-a2d5-28ff03a01a66 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-31.249999886225726%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-34980656-2faf-4c16-aa29-5c6a9ba561bb","keyframes":[{"offset":0,"transform":"translate3d(0, -222.03496%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -62.43623075200001%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -21.226542176000002%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -7.971055064000001%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -3.463745376%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-b5da68e0-dc8b-47fd-bd63-04f4bd311814","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-27a4597e-203e-493c-a6d6-3fa704fd6fef","keyframes":{"transform":["translate3d(0px, 121.54109%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7fe83ec9-3a17-4fa9-aee3-ad80073b4eee","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-151f250d-8349-423a-929b-f233ab7f7692","keyframes":{"transform":["translate3d(0px, 129.92205%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Difference between JDK, JRE, and JVM

[{"selector":"#anim-8382add0-34c5-4df2-a699-b9cb0374412a [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-31.249999886225726%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-328bc171-8226-4688-a222-48363ec75b9e","keyframes":[{"offset":0,"transform":"translate3d(0, -238.35812%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -67.026303344%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -22.787036272%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -8.557056508%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -3.718386672%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-780a6b49-2ab6-4d18-9f79-575a9fe0bfdd","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-be1ab75b-68cd-429d-8ace-06b3c37ff5d3","keyframes":{"transform":["translate3d(0px, 143.38017%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-38804f85-6ce8-4f1f-b040-a2703a45fc3a","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-551ef875-a494-487c-ad2f-a1e1f9a8f044","keyframes":{"transform":["translate3d(0px, 156.23784%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Learn more

What is the main function in Java?

[{"selector":"#anim-fd2c001d-703c-4ef6-8494-9817901f282b [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-7.808609702490505%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-27937d39-f01c-45db-b813-17f40f34cb77","keyframes":[{"offset":0,"transform":"translate3d(0, -197.84786%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -55.634818232%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -18.914255416%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -7.102738174%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -3.086426616%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-48996d30-993f-495c-8310-a852983f388f","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0a685d67-96f8-405b-8715-df8a7de2e314","keyframes":{"transform":["translate3d(0px, 121.54109%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e8e54b54-ec93-4ccd-a666-b6c96daf2072","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5c61a00a-7b63-4351-9423-de87bd1c11e9","keyframes":{"transform":["translate3d(0px, 135.88176%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

List Java Data Types

[{"selector":"#anim-3e2fc887-dc57-4cb3-8543-8cc0d3cf6df1 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-31.249999886225726%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-58582377-3547-476c-a10b-ecd825985e7d","keyframes":[{"offset":0,"transform":"translate3d(0, -230.07322%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -64.696589464%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -21.994999832%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -8.259628598%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -3.589142232%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-5ff57a86-6904-4073-aeb3-e3b6e6d28428","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cc2d45cd-b22d-495c-aae2-f9a8a489db1b","keyframes":{"transform":["translate3d(0px, 121.54109%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b50914e8-2471-4964-8032-8776ceabcd4d","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ce14e2cd-050d-4cd1-9ba6-23bb640e243b","keyframes":{"transform":["translate3d(0px, 135.88176%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Exception Handling in Java

[{"selector":"#anim-5c39a7b8-08f4-4644-99a3-744556634934 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-14.847387267295414%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-fe824a69-7832-447d-b13a-1e50e21a27b7","keyframes":[{"offset":0,"transform":"translate3d(0, -197.84786%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -55.634818232%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -18.914255416%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -7.102738174%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -3.086426616%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-63b9d6c7-f19b-40b7-80a1-46c9e1b583f1","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4c7f7806-2549-41ca-88bc-490fac6d5d72","keyframes":{"transform":["translate3d(0px, 121.54109%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a0a6014b-e894-4164-a943-1ddf432dfa1d","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8fbddf0a-48f3-46e1-9b6e-6cf6daf41771","keyframes":{"transform":["translate3d(0px, 135.88176%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Multithreading in Java

[{"selector":"#anim-5a60ed87-003e-46a8-a1b8-d64c467d9796 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-34.17499990397451%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-aba2ca96-cc10-45ad-b7af-c6f8297b659e","keyframes":[{"offset":0,"transform":"translate3d(0, -293.9484%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -82.65829008%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -28.10146704%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -10.55274756%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -4.585595039999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-a6ee05f1-df65-4804-9a15-e3ee0f393f27","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f10746e8-5f46-44fe-a3cb-575431f0056c","keyframes":{"transform":["translate3d(0px, 108.63776%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4865beab-adae-48bb-bce6-875cdcf53cae","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-351a96c4-dcd9-4b5c-88ed-d5ab3a36cdeb","keyframes":{"transform":["translate3d(0px, 116.62294%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Java Collections Framework

[{"selector":"#anim-00fea79d-6459-4abd-a68f-fa05d1f2de57 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-28.90624987200394%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-499b8efc-24ef-41c7-8f93-82b9f4b3a730","keyframes":[{"offset":0,"transform":"translate3d(0, -230.07322%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -64.696589464%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -21.994999832%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -8.259628598%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -3.589142232%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-a177b986-b215-4cef-93b9-1ca2cc001245","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-832a7b24-377c-49cd-8526-28010980b8a5","keyframes":{"transform":["translate3d(0px, 108.63776%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7571e98b-a38b-4352-b24d-5aa0cf588f99","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-723cf98d-1160-4827-8558-64c23a5c7934","keyframes":{"transform":["translate3d(0px, 117.41033%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

What are Java Annotations?

[{"selector":"#anim-e0d7746d-e9e3-4869-9f32-66fe655f9199 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-21.874999829338588%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-9e5e4c94-4567-45de-8592-edb6c073d495","keyframes":[{"offset":0,"transform":"translate3d(0, -230.07322%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -64.696589464%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -21.994999832%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -8.259628598%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -3.589142232%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-14198e72-fbb8-45d1-bc12-f944a4f92de1","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8303b1d6-c7c4-4acd-b4e9-247635ec22b8","keyframes":{"transform":["translate3d(0px, 121.54109%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-89bb7788-d30c-4913-af1b-7949f250c58d","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c1cbfa70-da48-4733-9f6d-4847c02e15b5","keyframes":{"transform":["translate3d(0px, 122.70723%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

JDBC in Java

[{"selector":"#anim-1c2bd9f0-4af1-46ea-bfa0-0d026c54f622 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-7.816596015515409%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-d062a30a-2846-45ad-a90b-69cfc8dcb507","keyframes":[{"offset":0,"transform":"translate3d(0, -293.9484%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -82.65829008%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -28.10146704%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -10.55274756%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -4.585595039999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-7943b87d-66f8-4f74-940e-e6359892c57b","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ed4d394a-f6c0-45c5-899b-42b4adb9140f","keyframes":{"transform":["translate3d(0px, 108.63776%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-640eb6c1-f2b6-43b9-8c54-1518b93be0f5","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e280d8bc-7327-4057-b753-9af50fc31748","keyframes":{"transform":["translate3d(0px, 106.62835%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Serialization and Deserialization

[{"selector":"#anim-2a511993-88a6-4032-ad37-c2305ad4f22d [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-27.53127882566252%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-36b7b048-4560-49ed-acdb-24f185df340a","keyframes":[{"offset":0,"transform":"translate3d(0, -304.92669%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -85.745385228%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -29.150991564%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -10.946868171%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -4.756856364%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-2211db4b-0525-4752-a6fa-37a62cb78e52","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-26c62f6e-5c93-4806-bb22-8325536d614b","keyframes":{"transform":["translate3d(0px, 137.92271%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2924126e-d363-4070-9a7b-72583317c0a9","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-baaf9d73-812a-4f94-8b55-7b04b82885ac","keyframes":{"transform":["translate3d(0px, 163.85834%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Java Design Patterns

[{"selector":"#anim-f6b7f3a3-41db-482f-970e-fa6386d1e724 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-27.53127882566252%, 0, 0) translate(-25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-1ceb5989-a47a-41b9-ac96-2eca017adb02","keyframes":[{"offset":0,"transform":"translate3d(0, -238.35812%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -67.026303344%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -22.787036272%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -8.557056508%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -3.718386672%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1000,"duration":1000,"fill":"both"}] [{"selector":"#anim-5b2e1c48-6671-4811-9559-0806b326f8ae","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-dc71a0a2-2d7d-4a20-bfb7-e167ec9f1449","keyframes":{"transform":["translate3d(0px, 145.36310%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-45530019-4cce-489f-b7df-25fd3713a426","keyframes":{"opacity":[0,1]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-208f6904-d4e2-4205-809a-b04e37540702","keyframes":{"transform":["translate3d(0px, 161.56984%, 0)","translate3d(0px, 0px, 0)"]},"delay":2000,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Enroll now

Java Interview Questions: Your Tech Interview

Discover key Java interview questions to boost your prep! From basics to advanced concepts, get ready to impress hiring managers.

What is Java?

Java is a versatile programming language known for its platform independence and object-oriented features. Learn its fundamentals!

Credit: GroTechMinds

Explain OOP Concepts

Understand Object-Oriented Programming (OOP) principles like inheritance, polymorphism, encapsulation, and abstraction.

Credit: GroTechMinds

Difference between JDK, JRE, and JVM

Clarify the distinctions between Java Development Kit (JDK), Java Runtime Environment (JRE), and Java Virtual Machine (JVM).

Credit: GroTechMinds

What is the main function in Java?

Explore the significance of the main() method in Java programs and its role in executing code.

Credit: GroTechMinds

List Java Data Types

From primitive to reference types, delve into the various data types supported by Java and their usage scenarios.

Credit: GroTechMinds

Exception Handling in Java

Learn how Java handles exceptions gracefully with try-catch blocks, finally block, and throw keywords.

Credit: GroTechMinds

Multithreading in Java

Discover the power of concurrency with multithreading in Java and how it enables efficient utilization of system resources.

Credit: GroTechMinds

Java Collections Framework

Explore the rich set of data structures and algorithms provided by the Java Collections Framework for efficient data manipulation.

Credit: GroTechMinds

What are Java Annotations?

Understand the purpose and usage of annotations in Java for adding metadata and facilitating code analysis.

Credit: GroTechMinds

JDBC in Java

Master Java Database Connectivity (JDBC) for seamless interaction with databases and executing SQL queries from Java programs.

Credit: GroTechMinds

Serialization and Deserialization

Grasp the concepts of serialization and deserialization in Java for object persistence and data exchange.

Credit: GroTechMinds

Java Design Patterns

Explore common design patterns like Singleton, Factory, Observer, and more to write cleaner, scalable, and maintainable Java code.