/*

    test.java

 */

 package test;

 public class test {

     public static void main(String args[] )

     {

         CPU ccp= new CPU();

         HardDisk hhd=new HardDisk();

         PC pc =new PC();

         ccp.setSpeed(2200);

         hhd.setAmount(200);

         pc.setCPU(ccp);

         pc.setHardDisk(hhd);

         pc.show();

     }

 }

 /*

   PC.java

 */

 package test;

 public class PC {

     CPU cpu ;

     HardDisk HD ;

     void setCPU(CPU cp)  { cpu=cp;  }

     void setHardDisk(HardDisk hd){ HD=hd ;}

     void show()

     {

         System.out.println("CPU的Speed: "+cpu.getSpeed());

         System.out.println("HardDisk: "+HD.getAmount());

     }

 }

 /*

   CPU.java

 */

 package test;

 public class CPU {

      int speed;

      void setSpeed(int m){speed=m;}

      int getSpeed(){return speed ;}

 }

 /*

   HardDisk.java

 */

 package test;

 public class HardDisk {

     int amount;

     void setAmount(int m){    amount=m;}

     int getAmount(){return amount;}

 }