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?

1044

What is locale?

1048

What are methods?

1031

What are parsers? Dom vs sax parser.

1063

What is java jit compilers?

1019

Is java code slower than native code?

1080

What is the basic difference between string and stringbuffer object?

1095

Why java is secure? Explain.

1051

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

986

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 ?

1093

What is the finalize method do?

1111

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

1072

What is native code?

1127

What is object-oriented programming?

1132

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Un-Answered Questions { Core Java }

How can we find the actual size of an object on the heap?

1321

What are the pillars of java?

933

For class CFoo { }; what default methods will the compiler generate for you>?

1085

What is a copy constructor in java?

1135

enlist some features of jdk.

959

What is the use of list in java?

996

What is double in java?

998

What is bubble sort in java?

1069

how to create multithreaded program? Explain different ways of using thread? When a thread is created and started, what is its initial state? Or extending thread class or implementing runnable interface. Which is better? : Java thread

1044

Can I import same package/class twice?

961

What is final int?

1039

Can main() method in java can return any data?

1195

Enlist diffrent types of inheritance supported by java?

925

What is a Hash Table? What are the advantages of using a hash table?

1093

What is an iterator java?

1126

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