// patterns/TemplateMethod.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Simple demonstration of Template Method
import java.util.stream.*;

abstract class ApplicationFramework {
 ApplicationFramework() {
 templateMethod();
 }
 abstract void customize1();
 abstract void customize2();
 // "private" means automatically "final":
 private void templateMethod() {
 IntStream.range(0, 5).forEach(
 n -> { customize1(); customize2(); });
 }
}

// Create a new "application":
class MyApp extends ApplicationFramework {
 @Override
 void customize1() {
 System.out.print("Hello ");
 }
 @Override
 void customize2() {
 System.out.println("World!");
 }
}

public class TemplateMethod {
 public static void main(String[] args) {
 new MyApp();
 }
}
/* Output:
Hello World!
Hello World!
Hello World!
Hello World!
Hello World!
*/