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

Core Java Interview Questions

Questions Answers Views Company eMail

Explain wait(), notify() and notifyall() methods of object class ?

1122

How to instantiate member inner class?

1150

Is this valid in java ? Can we instantiate interface in java?

1030

Explain about main() method in java ?

1119

What is an exception in java?

1162

Which is the best approach for creating thread ?

1275

Can we define package statement after import statement in java?

1108

How to instantiate static nested classes in java?

1137

Will the compiler creates a default constructor if I have a parameterized constructor in the class?

1175

Explain about interrupt() method of thread class ?

1180

Can we have more than one package statement in source file ?

1098

Explain differences between checked and unchecked exceptions in java?

1117

Can we have any code between try and finally blocks?

1079

If two threads have same priority which thread will be executed first ?

1575

Explain creating threads by extending thread class ?

1095

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is null object in java?

1059

How to make a write-only class in java?

1109

What is use of map in java?

1062

How many ways can we create the string object?

1073

What are the different types of java?

1115

What is hotjava?

1070

Why unicode is important?

980

Is singleton thread safe in java?

1030

Why java is platform independent? Explain.

1059

What are the advantages of passing this into a method instead of the current class object itself?

1728

How do you avoid global variables?

1144

How do you decide when to use arraylist and linkedlist?

1051

Can a static method be final?

1114

Who developed java?

1060

Explain the use of shift operator in java. Can you give some examples?

1044

For More Un-Answered { Core Java } Questions Click Here