What is a key in java?
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What does function identity () do?
Does java support multiple inheritance or not?
What is purpose of keyword void?
What is double parsedouble in java?
Does printwriter create a file?
What is the difference between a switch statement and an if statement?
What is garbage collection in Java, and how can it be used ?
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Should you use singleton pattern?
What is complexity in java?
Why can't we override private static methods?
Can private class be extended java?
Is an object null?