簡單工廠模式：由一個工廠對象決定創建出哪一種類的實例。
1.抽象類
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public abstract class People { public abstract void doSth();} |
2.具體類
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public class Man extends People{ @Override public void doSth() { System.out.println("I'm a man,I'm coding."); }} |
3.具體類
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public class Girl extends People{ @Override public void doSth() { System.out.println("I'm a girl,I'm eating."); }} |
4.工廠
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public class PeopleFactory { public static People getSpecificPeople(String type){ if("A-Man".equals(type)){ return new Man(); }else if("B-Girl".equals(type)){ return new Girl(); }else { return null; } }} |
5.測試代碼
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public class PeopleTestDemo { public static void main(String[] args) { People man = PeopleFactory.getSpecificPeople("A-Man"); Objects.requireNonNull(man,"對象不存在."); man.doSth(); People girl = PeopleFactory.getSpecificPeople("B-Girl"); Objects.requireNonNull(girl,"對象不存在"); girl.doSth(); People foodie = PeopleFactory.getSpecificPeople("Foodie"); Objects.requireNonNull(foodie,"對象不存在"); foodie.doSth(); }} |
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原文鏈接：http://www.cnblogs.com/emoji1213/archive/2017/09/28/7605276.html
