简单工厂模式
[实验任务]:女娲造人
使用简单工厂模式模拟女娲(Nvwa)造人(Person),如果传入参数M,则返回一个Man对象,如果传入参数W,则返回一个Woman对象,如果传入参数R,则返回一个Robot对象。请用程序设计实现上述场景。
类图
Man类
public class Man extends Person { @Override public void createPerson() { System.out.println("Nvwa造了一个Man"); } }
Woman类
public class Woman extends Person { @Override public void createPerson() { System.out.println("Nvwa造了个Woman"); } }
Person抽象类
public abstract class Person { public abstract void createPerson(); }
PersonFactory类
public class PersonFactory { public static Person create(String type) { Person person = null; switch (type) { case "M": person = new Man(); break; case "W": person = new Woman(); break; case "R": person = new Robot(); break; default: break; } return person; } }
Robot类
public class Robot extends Person { @Override public void createPerson() { System.out.println("Nvwa造了个Robot"); } }
SimpleFactory类
public class SimpleFactory { public static void main(String[] args) { try { //Man Person personM = PersonFactory.create("M"); personM.createPerson(); //Woman Person personW = PersonFactory.create("W"); personW.createPerson(); //Robot Person personR = PersonFactory.create("R"); personR.createPerson(); //其他 Person personN = PersonFactory.create("N"); personN.createPerson(); } catch (Exception e) { System.out.println("这个Nvwa造不出来"); } } }
运行结果: