定義
一個抽象類公開定義了執行它的方法的方式/模板。它的子類可以按需要重寫方法實現，但調用將以抽象類中定義的方式進行。這種類型的設計模式屬于行為型模式。
模板模式是基于繼承的。
角色
抽象模板
具體實現
實例
創建一個抽象模板，它的模板方法用final修飾
public abstract class Game {
abstract void initialize();
abstract void startPlay();
abstract void endPlay();
public final void play(){
initialize();
startPlay();
endPlay();
}
}
創建具體實現類
public class Football extends Game {
@Override
void initialize() {
System.out.println("football game initialized, start playing");
}
@Override
void startPlay() {
System.out.println("football game started, enjoy the game");
}
@Override
void endPlay() {
System.out.println("football game finished!");
}
}
public class Basketball extends Game {
@Override
void initialize() {
System.out.println("basketball game initialized, start playing");
}
@Override
void startPlay() {
System.out.println("basketball game started, enjoy the game");
}
@Override
void endPlay() {
System.out.println("basketball game finished!");
}
}
調用模板方法
public class Test {
public static void main(String[] args) {
Game game = new Football();
game.play();
}
}
運行結果
football game initialized, start playing
football game started, enjoy the game
football game finished!
