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 is the difference between set and list?

5 40780

Explain the difference between the Boolean & operator and the && operator?

1 8803

What are File and RandomAccessFile classes?

2 6900

What are Font and FontMetrics classes?

1 6991

In which JDK version event-delegation model is introduced?

1 4215

Difference between the String and StringBuffer classes?

3 7252

Difference between the paint() and repaint() methods?

1 15313

Difference between prefix and postfix forms of the ++operator?

3 9888

What is the difference between throw and throws?

IBM,

11 23510

What is yielding and sleeping? how they different?

2 6190

What is Unicast and Multicast object? Where we will use?

Scope International,

1 4010

Explain the difference between Unicast and Multicast objects?

1 5127

What is the frontend and backedn in Java?

TCS,

3 9919

What is the difference between static and non-static variables?

6 25884

What is the difference between the >> and >>> operators?

1 5324

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Un-Answered Questions { Core Java }

What is the do while loop syntax?

1036

Is space a char?

927

What is a method signature java?

1053

difference between byte stream class and character stream class?

4557

When will we prefer to use set and list in java and why?

963

How does split work in java?

1051

What is anonymous inner class?

1083

Which are the two subclasses under exception class?

1092

Why put method is used?

1012

Explain notifyall() method of object class ?

1090

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

1181

Which collection does not allow duplicates in java?

980

Java is pass by value or pass by reference? Explain

990

Is boolean a wrapper class in java?

1058

Can I learn java in 3 months?

1023

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