Is it possible to write a regular expression to check if string is a number?
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What is floor in java?
which method throws exception of type Throwable
Can we use different return types for methods when overridden?
write the hierarchy of component class?
Does constructor return any value?
What is anonymous inner class?
Is main an identifier?
Define Multiprogramming and Multiprocessing in java.
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what modifiers are used with top-level class?
Features of Java?
if two references are having same hash codes,is that means those are refering to same object?
Give me some null interfaces in java?