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

Core Java Interview Questions

Questions Answers Views Company eMail

What are command line arguments?

5 6452

What are order of precedence and associativity, and how are they used?

1 6792

What are the OOPS concepts in Java ?

Satyam,

4 11871

What are the Object and Class that classes used for?

Mphasis,

3 8400

What are access modifiers in Java ?

6 10124

What are the advantages of the model over the event- inheritance model?

1 6007

What are the common problems you have faced while implementing Java?

IBM,

1 7117

Name the components that are termed to be Heavy-weight component but available in Light-weight components?

2449

Different types of Layouts?

11 36221

Different types of modifiers?

RoboCom,

8 14400

What are the interfaces defined by Java.lang package?

1 7168

What are the operands of instanceof operator?

3 5321

methods in Applet?

1 4145

What are other modifiers?

Wipro,

2 4610

Name the packages in JDK?

2 8563

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Un-Answered Questions { Core Java }

Which is better stringbuilder or stringbuffer?

878

Where are the card layouts used?

1029

Why arraylist is not synchronized in java example?

980

What is the difference between assignment and initialization?

1004

How to change the priority of thread or how to set priority of thread?

986

what invokes a threads run() method? : Java thread

969

Can set contain duplicates?

960

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

966

How we can execute any code even before main method?

1083

How to convert string to byte array and vice versa?

1024

Can substring create new object?

1062

Explain the significance of class loaders in bootstrap?

896

What is callablestatement? How you can call stored procedure to pass in parameter?

983

What is the byte range?

987

Can we force garbage collector to run ?

1004

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