Demo code for Template pattern : Template Pattern « Design Pattern « Java Tutorial

1. Java Tutorial
2. Design Pattern
3. Template Pattern

abstract class ApplicationFramework {
  public ApplicationFramework() {
    templateMethod(); // Dangerous!
  }

  abstract void customize1();

  abstract void customize2();

  final void templateMethod() {
    for (int i = 0; i < 5; i++) {
      customize1();
      customize2();
    }
  }
}

class MyApp extends ApplicationFramework {
  void customize1() {
    System.out.print("Hello ");
  }

  void customize2() {
    System.out.println("World!");
  }
}

public class TemplateMethod {

  public static void main(String args[]) {
    MyApp app = new MyApp();
  }
}