can we have abstract class having no abstract method in java 3f

1abstract class AbstractDemo { // Abstract class
2   private int i = 0;
3   public void display() { // non-abstract method
4      System.out.print("Welcome to Tutorials Point");
5   }
6}
7public class InheritedClassDemo extends AbstractDemo {
8   public static void main(String args[]) {
9      AbstractDemo demo = new InheritedClassDemo();
10      demo.display();
11   }
12}