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 peerless components in java programming?

1023

What is the purpose of the finally clause of a try-catch-finally statement in java programming?

962

How many bits are used to represent unicode, ascii, utf-16, and utf-8 characters in java programming?

1022

What is an abstract method in java programming?

1053

What is the set interface in java programming?

1223

What modifiers may be used with an inner class that is a member of an outer class in java programming?

1112

What is the difference between a static and a non-static inner class in java programming?

1084

Is sizeof a keyword in java programming?

1072

What is casting in java programming?

1047

What is the preferred size of a component in java programming?

1007

What is the difference between the paint() and repaint() methods in java programming?

1201

Can an anonymous class be declared as implementing an interface and extending a class in java programming?

1299

What an i/o filter in java programming?

1111

What advantage do java's layout managers provide over traditional windowing systems?

961

What is synchronization and why is it important in java programming?

951

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Un-Answered Questions { Core Java }

When is update method called?

1149

What is queue in java?

1159

why using interface interface ?

2057

If you are given the name of the function at run time how will you invoke the function?

1141

What is anti pattern in programming?

973

Can java program run without jre?

1018

What is t type java?

1072

How will you serialize a singleton class without violating singleton pattern?

1967

Is main is a keyword?

1004

what is meant by encapsulation?

1088

How we can execute any code even before main method?

1152

What are java packages?

1042

What is the full name of java?

1131

Define max and min heap, also the search time of heap.

1032

What is the purpose of the return statement?

1069

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