JAVA课程4 类 描述计算机CPU速度与硬盘容量

class CPU{int Speed;void setSpeed(int m){Speed=m;}    int getSpeed()     {    return Speed;     }}

class HardDisk{ int amount; void setAmount(int m)  {   amount=m;  }  int getAmount()  {   return amount;  }}

class PC{CPU cpu;void setCPU(CPU c){cpu=c;}HardDisk HD;void setHardDisk(HardDisk h){     HD=h;    }void Show(){System.out.printf("CPU's Speed："+ cpu.getSpeed());System.out.printf( " ");System.out.printf("HardDisk's Amount："+ HD.getAmount());}}

public class Tst{public static void main(String args[]){CPU cpu=new CPU();cpu.setSpeed(2220);HardDisk disk=new HardDisk();    disk.setAmount(220);PC pc=new PC();pc.setCPU(cpu);pc.setHardDisk(disk);pc.Show();}}