What is collection class in java?
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When we serialize an object does the serialization mechanism saves its references too?
Which One is optimal to choose ? Syncronized hash map or Hash table with single thread model? How can a hash map syncronized with out using syncrozed blocks in programm?
What is difference between pointer and reference?
what is unreachable code problem in multiple catch statements
What is the benefit of inner / nested classes ?
In what circumstances, compiler will supply a default constructor for a class?
Will set allow duplicates in java?
Can you call a method on a null object?
What do you mean by stack?
Can you make a constructor final in Java?
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What differences exist between iterator and listiterator?
explain autoboxing in java?