1 public class TemplateMethodTest {    
 2     public static void main(String[] args) {
 3         AbstractClass abstractClass=new SubClass1();
 4     }
 5 }
 6 
 7 abstract class AbstractClass{
 8     public void operation(){
 9         // open
10         System.out.println(" pre ... ");
11 
12         System.out.println(" step1 ");
13 
14         System.out.println(" step2 ");
15 
16         templateMethod();
17     }
18 
19     abstract protected void templateMethod();
20 }
21 
22 class SubClass extends AbstractClass{
23      @Override
24     protected void templateMethod() {
25         System.out.println("SubClass executed . ");
26     }
27 }
28 
29 class SubClass1 extends AbstractClass{
30      @Override
31     protected void templateMethod() {
32         System.out.println("SubClass1 executed . ");
33     }
34 }