用类描述计算机中CPU的速度和硬盘的容量

要求Java应用程序中有4个类，名字分别为：PC、CPU、HardDisk和Test，其中Test是主类。

CPU类，代码如下：

package CpuAndHardDisk;public class CPU {private int speed;public int getSpeed() {return speed;}public void setSpeed(int speed) {this.speed = speed;}}

HardDisk类，代码如下：

package CpuAndHardDisk;public class HardDisk {private int amount;public int getAmount() {return amount;}public void setAmount(int amount) {this.amount = amount;}}

PC类，代码如下：

package CpuAndHardDisk;public class PC {private CPU cpu;private HardDisk HD;public void setCpu(CPU cpu) {this.cpu = cpu;}public void setHD(HardDisk hD) {HD = hD;}public void show() {System.out.println("CPU速度为:"+cpu.getSpeed()+",磁盘容量为:"+HD.getAmount());}}

Test类，代码如下：

package CpuAndHardDisk;public class Test {public static void main(String[] args) {CPU cpu =new CPU();cpu.setSpeed(2200);HardDisk HD =new HardDisk();HD.setAmount(200);PC pc =new PC();pc.setCpu(cpu);pc.setHD(HD);pc.show();}}

运行效果图：