How do I stop concurrentmodificationexception?
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What is the difference between parameters and arguments ?
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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?
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Implement two stacks using a single array.
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