Can a boolean be null java?
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Is it possible to write a regular expression to check if string is a number?
What about instanceof operator in java?
Why does java not allow multiple public classes in a java file ?
What is anagram in java?
What does sprintf return?
What is downcasting?
What is encapsulation? Elaborate with example?
Why const and goto are reserved keyword in java?
What is a loop java?
Does java linked list allow duplicates?
What are pass by reference and pass by value?
what is difference between Interface and abstract class