suppose in a class there is a code like this: { Set hs=new Hashset(); hs.add(new Emp("kathy",1000)); hs.add(new Emp("kathy",2000)); } how can u avoid the above code in your class as set won't allow duplicate objects?

3 Answers  

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What is variable and rules of variable?

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Which way a developer should use for creating thread, i.e. Sub classing thread or implementing runnable.

0 Answers  

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Why is singleton not thread safe?

0 Answers  

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How does predicate work in java?

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What is %d in printf?

0 Answers  

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Why can't we make jsp as a controller and action servlet in struts?

8 Answers   TCS, Wipro,

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What is null object in java?

0 Answers  

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What is formatted output?

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What is the use of System class?

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Hi.... I applied for the post of scientific officer/Engineer-SB(Programmer).Please post the syllabus and sample papers.

0 Answers  

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What is meant by serialisation and deserialisation?

4 Answers  

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