45 lines
982 B
Java
45 lines
982 B
Java
// patterns/TemplateMethod.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// Simple demonstration of Template Method
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import java.util.stream.*;
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abstract class ApplicationFramework {
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public ApplicationFramework() {
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templateMethod();
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}
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abstract void customize1();
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abstract void customize2();
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// "private" means automatically "final":
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private void templateMethod() {
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IntStream.range(0, 5).forEach(
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n -> { customize1(); customize2(); });
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}
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}
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// Create a new "application":
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class MyApp extends ApplicationFramework {
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@Override
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void customize1() {
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System.out.print("Hello ");
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}
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@Override
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void customize2() {
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System.out.println("World!");
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}
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}
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public class TemplateMethod {
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public static void main(String[] args) {
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new MyApp();
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}
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}
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/* Output:
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Hello World!
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Hello World!
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Hello World!
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Hello World!
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Hello World!
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*/
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