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

Core Java Interview Questions

Questions Answers Views Company eMail

Write a program to reverse a number in java?

1107

Explain the difference between treeset and treemap in java?

991

Can you override static method in java?

1 1714

What is difference between fileinputstream and filereader in java?

1083

How to compare strings in java?

1036

How to do a true java ping from windows?

1178

How to split a string in java?

1149

do I need to use synchronized on setvalue(int)? : Java thread

1025

when you will synchronize a piece of your code? : Java thread

1045

what do you understand by synchronization? Or what is synchronization and why is it important? Or describe synchronization in respect to multithreading? Or what is synchronization? : Java thread

963

how to create multithreaded program? : Java thread

969

why would you use a synchronized block vs. Synchronized method? : Java thread

962

what is deadlock? : Java thread

1024

what is the difference between yielding and sleeping? : Java thread

980

what is synchronization? : Java thread

1034

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Un-Answered Questions { Core Java }

List any five features of java?

1040

What are annotations in java?

1107

what is mutual exclusion? : Java thread

1037

What is final modifier?

1073

What is the use of join method?

1048

What is java ceil?

1047

Explain polymorphism citing an example.

1058

Explain the selection sort algorithm and state its time complexity?

1037

If A Class Is Declared Without Any Access Modifiers, Where May The Class Be Accessed?

1201

Why parameters should be passed by reference?

982

Why do we need singleton?

985

what are three ways in which a thread can enter the waiting state? : Java thread

1050

What are the properties of thread?

945

What is return null in java?

982

Explain the selection sort algorithm?

1074

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