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 ?

1078

How to instantiate member inner class?

1101

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

1001

Explain about main() method in java ?

1085

What is an exception in java?

1126

Which is the best approach for creating thread ?

1232

Can we define package statement after import statement in java?

1050

How to instantiate static nested classes in java?

1104

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

1127

Explain about interrupt() method of thread class ?

1138

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

1055

Explain differences between checked and unchecked exceptions in java?

1078

Can we have any code between try and finally blocks?

1037

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

1500

Explain creating threads by extending thread class ?

1062

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Un-Answered Questions { Core Java }

Is null an object java?

1004

What is role of void keyword in declaring functions?

1066

What method is used to specify a container's layout in java programming?

1162

How do you identify independent and dependent variables?

1027

Is main a function?

1065

What is anti pattern in java?

985

Explain notify() method of object class ?

1124

String and stringbuffer both represent string objects. Can we compare string and stringbuffer in java?

985

What is the point of polymorphism java?

1035

How a variable is stored in memory?

1010

How is string stored in java?

1073

What is passing value java?

1075

what is difference betweem home interface and remote interface?

2645

What is thread pool in java with example?

1022

Which variable is the independent variable?

992

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