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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import java.io.*; class Demo { public static void main(String args[]) { File f=new File("1234.msg"); String arr[]=f.list(); System.out.println(arr.length); } }

3 Answers   IBM, Ramco,

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What is console based application in java?

0 Answers  

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Explain difference between final, finally and finalize?

3 Answers   Cognizant,

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There are 2 classes, 1 LandAnimal and another WaterAnimal. There is another class Animal which wants to have the properties of both LandAnimal and WaterAnimal. How will you design this situation?

6 Answers   KPIT,

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Difference between predicate, supplier and consumer ?

0 Answers  

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Which is better 64 bit or 32 bit?

0 Answers  

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What will happen to the exception object after exception handling?

0 Answers  

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What is entry in java?

0 Answers  

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What is an exception in java?

0 Answers  

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What is set string?

0 Answers  

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What is nullpointerexception in java?

0 Answers  

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