Core Java

Is it compulsory for a subclass of abstract class to provide implementation of abstract method?

Any class that extends an abstract class must implement all the abstract methods of the super class unless the subclass is also an abstract class.

What is meant by abstract method in java?

Can a normal class have an abstract method in java?

Is it compulsory for a abstract class to have abstract methods?

Can we instantiate abstract class in java?

What is meant by abstract class in java?