Why hashset is used in java?
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What an i/o filter in java programming?
How can you share data between two thread in Java?
why we need this (1.object,2.class,3.data hiding,4.encapsulation,5.abstraction,6. polymorphism,7.inheritance)
Is there memory leaks in java?
What is the method used to get the absolute value of a number?
How to restrict a member of a class from inheriting by its sub classes?
Static Variable can referred in non-static method?
Distinguish method overloading and method overriding
What are the differences between forwarding () method and sendredirect() methods?
How can we run a java program without making any object?
What is the use of set in java?
What is exception hierarchy in java?