上机练习2 类与对象 pc cpu harddisk对象组合

题目：

public class CPU {int speed;void setSpeed(int m) {speed=m;}int getSpeed() {return speed;}}
public class HardDisk {int amount;void setAmounr(int m ) {amount=m;}int getAmount() {return amount;}}

public class PC {CPU cpu;HardDisk HD;void setCPU(CPU c) {cpu=c;}void setHardDisk(HardDisk h) {HD=h;}void show() {System.out.println("cpu的速度为："+cpu.getSpeed());System.out.println("硬盘容量为："+HD.getAmount());}}

public class Test {public static void main(String args[]) {CPU cpu=new CPU();cpu.setSpeed(2200);HardDisk disk=new HardDisk();disk.setAmounr(200);PC pc=new PC();pc.setCPU(cpu);pc.setHardDisk(disk);pc.show();}}



运行结果：