How is garbage collection controlled?
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Explain the difference between call by refrence and call by value?
What are the legal operands of the instanceof operator?
Can we use return in constructor?
What is an immutable class? How to create an immutable class?
What are the advantages of java over C++?
Make a data structure and implement an algorithm to print all the files in a directory. (The root directory can have sub-directories too.)
Why do we declare a class static?
why use interface? if interface declear a method implement in class. why direct implement method in class
how we can make a write-only class in java?
Is java map thread safe?
What are the six ways to use this keyword?
Can we declare main () method as non static?