Give some features of interface?
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What is null mean in java?
Explain about Superclass and Subclass?
Can you override static methods?
List the three steps for creating an object for a class?
Why static functions are used?
Is singleton thread safe in java?
Difference in the use of print, println, and printf.
Can a constructor call the constructor of parent class?
To the class members how can we provide security?
what are the major differences between jdk1.4 and jdk1.5?
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Are the equals() and hashCode() protected methods of object class?
What is the finalize method do?