An abstract class cannot be instantiated. Only its subclasses can be instantiated. A class that has one or more abstract methods must be declared abstract. A subclass that does not provide an implementation for its inherited abstract methods must also be declared abstract. You indicate that a class is abstract with the abstract keyword like this: public abstract class AbstractClass
Java
Topic: Abstract Class and Interfaces
What does it mean that a method or class is abstract?
Browse random answers:
How to Declare Interfaces in java?
what are the properties of interfaces?
How to implement interfaces?
How to extend intrfaces?
Explain tagging interfaces in java?
What is the difference between Abstract class and Interface?
What does it mean that a method or class is abstract?
What must a class do to implement an interface?
What is a cloneable interface and how many methods does it contain?
What is meant by "Abstract Interface"?
How to define an Interface?
Can Abstract Class have constructors? Can interfaces have constructors?
What methods would a class that implements the java.lang.CharSequence interface have to implement?
What is wrong with the following interface?public interface SomethingIsWrong { void aMethod(int aValue) { System.out.println("Hi Mom"); }}
Is the following interface valid?public interface Marker {}
Can interfaces contain inner classes?
What interface do you implement to do the sorting?
What is the eligibility for a object to get cloned?
What is the use of serializable?
Can a abstract method have the static qualifier?
