Core Java Interview Questions
Questions Answers Views Company eMail

What is the difference between set and list?

5 38901

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

1 8090

What are File and RandomAccessFile classes?

2 5831

What are Font and FontMetrics classes?

1 6130

In which JDK version event-delegation model is introduced?

1 3472

Difference between the String and StringBuffer classes?

3 5714

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

1 14414

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

3 8719

What is the difference between throw and throws?

IBM,

10 19825

What is yielding and sleeping? how they different?

2 4992

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

Scope International,

1 3154

Explain the difference between Unicast and Multicast objects?

1 4374

What is the frontend and backedn in Java?

TCS,

3 8602

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

6 23506

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

1 4472


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Un-Answered Questions { Core Java }

Does list maintain insertion order java?

535


What is immutability in java?

600


What is lifetime variable?

521


Is class is a data type?

570


Can we synchronize static methods in java?

597






What is scope & storage allocation of static, local and register variables? Explain with an example.

560


Can we compare two strings in java?

554


Difference between concurrent hashmap and hashtable and collections

561


Is java owned by oracle?

522


What do you mean by boolean?

573


Why java is call by value?

544


Can java program run without jre?

565


Explain try and catch keywords in java?

619


What do you know about the garbage collector in java?

570


Explain about sets?

565