What is immutable state?
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Which oo concept is achieved by using overloading and overriding?
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?
Is set thread safe java?
Is java programming easy?
Explain what access modifiers can be used for variables?
What are sets in java?
What are other modifiers?
What is bytecode verifier?
Can we create a constructor in abstract class?
What primitive Java types? Howmany are they and what are their names?
How do you remove all elements from an arraylist in java?
Is hashset sorted in java?