Can a class extend more than one class?
What is sleep method?
what state does a thread enter when it terminates its processing? : Java thread
What is mutable object and immutable object?
What is object-oriented programming?
Can we have a abstract class withought any method? What is a purspose of this?
What method is used to compare two strings ?
What is the difference between an interface and an abstract class?
What is parseint?
Can we write a class without main method in java?
What are the basic control structures?
Can an abstract class be a final class?
Difference between static methods, static variables, and static classes in Java.