工厂模式 女娲造人

Person . java

package test2;

public interface Person {
	
	public void make();
	
}

 创建接口：File ---------> new  -------->  interface

Man . java

package test2;

public class Man implements Person{
	
	public Man() {
		
    }
    public void make(){
    	
        System.out.print("生产男人");
        
    }
}

Woman . java

package test2;

public class Woman implements Person{
	
	public Woman() {
	}
	
	public void make() {
		
		System.out.print("生产女人");
		
	}
}

Robot . java

package test2;

public class Robot implements Person{
	
	public Robot() {
    }
	
    public void make(){
    	
        System.out.print("生产机器人");
        
    }
}

Nvwa . java

package test2;

public class Nvwa {

	public Nvwa() {
	
	}

	public static  Person Personjudge(String arg ) {
        //判断参数，再选择调用哪个类
        if(arg.equalsIgnoreCase("M"))
        {
            return new Man();
        }else if(arg.equalsIgnoreCase("W"))
        {
            return new Woman();
        }else if(arg.equalsIgnoreCase("R"))
        {
            return new Robot();
        }else
        {
            return null;
        }
    }
	}

test . java

package test2;

import java.util.Scanner;

public class test {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner scan = new Scanner(System.in);
		  System.out.print("请输入参数:");
		  String s = scan.nextLine();
		  
		try{
            Person p = Nvwa.Personjudge(s);
            p.make();
        }catch(Exception e){
            System.out.println(e.getMessage());
        }
		scan.close();
	}

}