多态 接口

package PC;

public class computer {

    private String pinpai;

    private ICPU cpu;

    private Idisplaycard displaycard;

    public String getPinpai() {
        return pinpai;
    }

    public void setPinpai(String pinpai) {
        this.pinpai = pinpai;
    }

    public ICPU getCpu() {
        return cpu;
    }

    public void setCpu(ICPU cpu) {
        this.cpu = cpu;
    }

    public Idisplaycard getDisplaycard() {
        return displaycard;
    }

    public void setDisplaycard(Idisplaycard displaycard) {
        this.displaycard = displaycard;
    }

    public void run()
    {
        this.cpu.command();

        this.displaycard.display();
        
        System.out.println("我组装的"+pinpai+"电脑开始运行");
    }
    public computer(String pinpai) {
        super();
        this.pinpai = pinpai;
        this.cpu = cpu;
        this.displaycard = displaycard;
    }
    
    public static void main(String []args)
    {    
        System.out.println();
        computer c1 = new computer("hp");
        AMD a1 = new AMD();
        c1.setCpu(a1);
        c1.setDisplaycard(new Nivdia());
        c1.run();
        
        System.out.println();
        computer c2 = new computer("华硕");
        c2.setCpu(new intel());
        c2.setDisplaycard(new Nivdia());
        c2.run();
        
        System.out.println();
        AMD2 a2 = new AMD2();
        computer c3 = new computer("acer");
        c3.setCpu(a2);
        c3.setDisplaycard(a2);
        c3.run();
        
        System.out.println();
        AMD3 a3 = new AMD3();
        computer c4 = new computer("acer");
        c4.setCpu(a3);
        c4.setDisplaycard(a3);
        c4.run();
    }
}

package PC;

public class ATI implements Idisplaycard {

    @Override
    public void display() {
        
        System.out.println("我是A卡");
    }
}

package PC;

public class AMD implements ICPU {

    @Override
    public void command() {
        
    System.out.println("我是AMD的CPU");    

    }
}