In Java, can we define an abstract class without abstract methods?

Yes, we can declare an abstract class without abstract methods in Java.

• Abstract class means a function definition that hides the implementation and displays it to the user.
• An abstract classs has both abstract methods and non-abstract methods.
• For abstract class, we cannot create objects directly. But we can create objects indirectly using subclass objects.
• Java abstract classes can have instance methods that implement default behavior.
• Java abstract classes can have instance methods that implement default behavior. >Abstract classOnly one class or one abstract class can be extended at a time.
• Declaring a class as abstractwith no abstract methods means we are not allowed
• Abstract classes used in Javameans we cannot directly Create an object of this class.

Example

abstract class AbstractDemo { // Abstract class
   private int i = 0;
   public void display() { // non-abstract method
      System.out.print("Welcome to Tutorials Point");
   }
}
public class InheritedClassDemo extends AbstractDemo {
   public static void main(String args[]) {
      AbstractDemo demo = new InheritedClassDemo();
      demo.display();
   }
}

In the above example, we did not define the abstract method in the AbstractDemo class. The compiler will not throw any compile-time errors.

Output

Welcome to Tutorials Point

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