Why string is a class?
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whays is mean by inner class?
How does enum work in java?
What is use of a abstract variable?
Write a factorial program using recursion in java?
What are alternatives to java serialization?
When a lot of changes are required in data, which one should be a preference to be used? String or stringbuffer?
How to invoke external process in java.
What is difference between array and vector?
What is the maximum length of a url?
When you declare a method as abstract method ?
Implementations of set interface?
Does hashset allow duplicates in java?