can we take more than one null values for Unique
constraints.
Is void a keyword in java?
How to call one constructor from the other constructor ?
Map map = new HashMap(2); map.add(“1”,”one”); map.add(“2”,”two”); map.add(“3”,”three”); What will happen at this line?
What interface is extended by awt event listeners?
we have syntax like for(int var : arrayName) this syntax is to find whether a number is in the array or not.but i want to know how to find that number's location.
What is a treeset in java?
Hi Friends, I am beginner in java. what i know about synchonized keyword is,If more that one 1 thread tries to access a particular resource we can lock the method using synchronized keyword. Then after that how the lock is released and how next thread access that.Please explain with example.
What is math exp in java?
What are three types of loops in java?
What is the this keyword?
When should I use singleton?
Is there any difference between nested classes and inner classes?