Why java is object oriented?
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How does class forname work in java?
Why there is no call by reference in java?
What is boolean in java?
what is difference between excute query ()and execute update ()?
How many bytes are there?
What are the types of inner classes (non-static nested class) used in java?
How do you compare two strings lexicographically?
When do we need to use internal iteration? When do we need to use external iteration?
What's the purpose of static methods and static variables?
In collection sorting comparable and comparator interface will be used..but why this two interfaces required..two will work same purpose so why there are two interfaces instead of one?when to use comparator and when to use comparable?
What is the purpose of interface?
Can singleton class be cloned?