What is a static method in java?
How does singleton class work?
What is arrays fill in java?
what is difference between Exception and Error?
What is the purpose of a transient variable?
What is the association?
What is integer parseint?
How do you calculate roots in java?
If an object reference is set to null, will the garbage collector immediately free the memory held by that object?
Is a class subclass of itself?
What is the difference between hashset and treeset in java?
What is the use of isempty in java?
Difference between class#getinstance() and new operator ?