Java Related Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Java J2EE (14736)
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Java Related Interview Questions

Questions Answers Views Company eMail

Can we access instance variables within static methods ?

1115

What is the use of optional ?

1050

Difference between doublesummarystatistics, intsummarystatistics and longsummarystatistics ?

996

Difference between final and effectively final ? Why is effectively final even required ?

1003

Similarity and difference between static block and static method ?

936

Difference between class#getinstance() and new operator ?

1228

What is a lambda expression ? What's its use ?

1127

Describe what happens when an object is created in java ?

1022

Difference between == and .equals() ?

1018

What are default methods ?

1061

Does constructor creates the object ?

1051

What are the difference between composition and inheritance in java?

1042

How is abstraction implemented in java ?

1035

How can we disable a constraint ?

1035

Does sql allow null values ? Can we use it within where clause ?

990

Un-Answered Questions { Java Related }

What is the way to rollback transaction if something goes wrong using hibernate api?

404

Can we declare the static variables and methods in an abstract class?

1002

whatis Home interface and Remoteinterface? with example?

2017

What are the two types of collections in hibernate?

467

Who developed rxjava?

899

Why is jms used?

857

Explain the custom jsp tags and the beans.

1076

When is an object subject to garbage collection?

1103

What is meant by custom tags?

984

How do I fix context service has stopped?

453

What is oauth token?

451

Explain all java features with real time examples

1731

Explain the performance tuning in jvm?

955

What's the purpose of using break in each case of switch statement?

1002

What is proxy class in hibernate?

410

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