What is a class in java?
Is null or empty java?
What is ‘is-a ‘ relationship in java?
Why wait and notify methods are declared in object class?
What is final method in java?
What are the main differences between notify and notifyAll in Java?
What is bool mean?
How many arguments can be passed to main ()?
What is the use of put method?
Explain pass by reference and pass by value?
There can be a abstract class without abstract methods, but what is the need to declare a class abstract if it doesn't contain abstract methods?
How do you remove duplicates in java?
Is string passed by reference in java?