Test类实验

package PC_TEST;class CPU{int speed;CPU(){speed=0;}CPU(int k){speed=k;}void setSpeed(int k){speed=k;}int setSpeed(){return speed;}}class HardDisk{int amount;HardDisk(){amount=0;}HardDisk(int k){amount=k;}void setSpeed(int k){amount=k;}int setSpeed(){return amount;}}class PC{CPU cpu;HardDisk HD;PC(){cpu=new CPU();HD=new HardDisk();}void setCPU(CPU c){cpu=c;}void setHarDisk(HardDisk h){HD=h;}void show(){System.out.println("CPU speed:"+          +cpu.speed   +" HardDisk amount:"   +HD.amount);}}public class TEST {public static void main(String[] args) {CPU cpu=new CPU(2200);HardDisk disk=new HardDisk(200);PC pc=new PC();pc.setCPU(cpu);pc.setHarDisk(disk);pc.show();}}