What is return null in java?
What are the different access modifiers available in java?
Can we override constructor?
What is static class
What is purpose of keyword void?
why java main method is given as static method?
What is the difference between static and global variables and also define what are volatile variables?
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Which is better stringbuilder or stringbuffer?
What is qms certification?
Difference between predicate, supplier and consumer ?
What is foreach loop in java?
What is the maximum size of list in java?
Can we create more than one object singleton class?