package lianxi;

public interface ICpu {

    public  boolean neiCun();//内存接口

}

package lianxi;

public class cpuceshi implements ICpu {

    @Override

    public boolean neiCun() {

        System.out.println("CPU内存太小了");

        return true;

    }

}

public class computer {

    private ICpu cpu;

    public ICpu getDiannao() {

        return cpu;

    }

    public void setDiannao(ICpu cpu) {

        this.cpu = cpu;

    }

    double rongliang;

    boolean CP(){

        boolean rtn=true;

        if (rongliang>50){

            System.out.println("安装了一个"+rongliang+"兆的CPU");

            rtn=false;

        }else if(cpu==null){

            System.out.println("未安装CPU");

            rtn=false;

        }else{

            rtn=this.cpu.neiCun();

        }return true;

    }

}

package lianxi;

public class CeShi {

    public static void main(String[] args) {

        // TODO 自动生成的方法存根

        computer cop=new computer();

        cop.rongliang=34;
　　　　　System.out.println("当容量为"+cop.rongliang+"的时候");

        cop.setDiannao(new cpuceshi());

        cop.CP();

    }

}

package lianxi;

public class CeShi {

    public static void main(String[] args) {

        // TODO 自动生成的方法存根

        computer cop=new computer();

        cop.rongliang=70;

        System.out.println("当容量为"+cop.rongliang+"的时候");

        cop.setDiannao(new cpuceshi());

        cop.CP();

    }

}