What do you meant by active and passive objects?

0 Answers   Wipro,

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Is it compulsory to have atleast one abstract method in abstract class?

10 Answers  

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What are the operands of instanceof operator?

3 Answers  

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What is actual difference between statement,prepared statement and callable statement and when we have to use it? pls post a answer with code and clear explanation. thanks

2 Answers  

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Will the compiler creates a default constructor if I have a parameterized constructor in the class?

0 Answers  

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What do you mean by constant time complexity?

0 Answers   Amazon,

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what is Vector class?

2 Answers  

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which method throws exception of type Throwable

2 Answers  

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What does java final mean?

0 Answers  

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What is the main purpose of serialization in java?

0 Answers  

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What is an exception?

6 Answers  

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What is immutable class? how to make a Class explicitly "Immutable"?Wap to make a class explicitly immutable.

3 Answers  

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