2016/1/21 练习 创建 接口interface 应用implements 类class 并实例化调用

package testinterface;

public interface ICpu {
    //电压
    public boolean  dianya();
    //控制
    public void  kongzhi();
    //运算
    public void  yunsuan();
    //存储
    public void  cunchu();
    
}

public class Intel implements ICpu{

    @Override
    public boolean dianya() {
        System.out.println("电压正常");
        return true;
    }

    @Override
    public void kongzhi() {
        System.out.println("控制单元工作");
        
    }

    @Override
    public void yunsuan() {
        System.out.println("运算单元工作");
        
    }

    @Override
    public void cunchu() {
        System.out.println("存储单元工作");
        
    }

package testinterface;
import testinterface.ICpu;


public class Computer {
    
    private ICpu cpu;

    public ICpu getCpu() {
        return cpu;
    }

    public void setCpu(ICpu intel) {
        this.cpu = intel;

        String i="intel";
        if( !i.equals("intel")){  
            System.out.println("cpu不可以使用");
            
        }
        else if (i.equals("intel")){
            System.out.println("cpu可以使用");    
        }
        else{
            
        }

        
    }

    
        
    
}

调用

package testinterface;

public class Testcomputer {

    public static void main(String[] args) {
        Computer in=new Computer();
        in.setCpu(new Intel());
        
        }
    }