What is the difference between hashmap and hashtable in java?
Why constructor has no return type?
What is garbage collection? Can it be forced to run?
What are constants and how to create constants in java?
define System.out.println(); what is the meaning!
What happens if I remove static from main method?
What class is used to implement a Throwable array?
How to make a class immutable?
What is string in java is it a data type?
How do I get the | symbol on my keyboard?
What are teh sub-classes of a component class?
Can we print null in java?
What is the use of object and class classes?