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

Core Java Interview Questions

Questions Answers Views Company eMail

How can the checkbox class be used to create a radio button?

1043

What is locale?

1047

What are methods?

1031

What are parsers? Dom vs sax parser.

1062

What is java jit compilers?

1019

Is java code slower than native code?

1080

What is the basic difference between string and stringbuffer object?

1094

Why java is secure? Explain.

1050

What is the difference between procedural and object-oriented programs?

985

Why does it take so much time to access an applet having swing components the first time?

1939

can rmi and corba based applications interact ?

1092

What is the finalize method do?

1110

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

1071

What is native code?

1127

What is object-oriented programming?

1131

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Un-Answered Questions { Core Java }

If an object is garbage collected, can it become reachable again?

1021

How can we access some class in another class in java?

1001

What is a marker interface?

1172

What is the purpose of the main method?

998

What is callable java?

989

What are the high-level thread states in java programming?

1069

what happens when a thread cannot acquire a lock on an object? : Java thread

1058

I don’t want my class to be inherited by any other class. What should I do?

1022

What methods are used to get and set the text label displayed by a button object?

1028

What is <> used for in java?

1132

What is hashing principle in java?

1035

What is the char data type?

1010

What restrictions are placed on method overriding in java programming?

1017

How to implement a multithreaded applet?

2683

What are the disadvantages of object oriented programming?

1286

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