Java Tutorial/Design Pattern/Template Pattern

Demo code for Template pattern

   <source lang="java">

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();
 }

}</source>

Template pattern with abstract class

   <source lang="java">

public class TestTemplate {

 public static void main(String args[]) {
   Car automotiveRobot = new Car("Automotive");
   Cooker cookieRobot = new Cooker("Cook");
   automotiveRobot.go();
   cookieRobot.go();
 }

} class Cooker extends Machine {

 private String name;
 public Cooker(String n) {
   name = n;
 }
 public void getParts() {
   System.out.println("Getting a flour and sugar....");
 }
 public void assemble() {
   System.out.println("Baking a cookie....");
 }
 public void test() {
   System.out.println("Crunching a cookie....");
 }
 public String getName() {
   return name;
 }

} class Car extends Machine {

 private String name;
 public Car(String n) {
   name = n;
 }
 public void getParts() {
   System.out.println("Getting a carburetor....");
 }
 public void assemble() {
   System.out.println("Installing the carburetor....");
 }
 public void test() {
   System.out.println("Revving the engine....");
 }
 public String getName() {
   return name;
 }

} abstract class Machine {

 public final void go() {
   start();
   getParts();
   assemble();
   test();
   stop();
 }
 public void start() {
   System.out.println("Starting....");
 }
 public void getParts() {
   System.out.println("Getting parts....");
 }
 public void assemble() {
   System.out.println("Assembling....");
 }
 public void test() {
   System.out.println("Testing....");
 }
 public void stop() {
   System.out.println("Stopping....");
 }

}</source>