书本第四章编程练习_shawnchen的博客

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

        int getSeed() {
            return speed;
        }

        public void setSpeed(int speed) {
            this.speed = speed;
        }
    }

   public  class HardDisk {
        int amount;

        int getAount() {
            return amount;
        }

        public void setAmount(int amount) {
            this.amount = amount;
        }
    }

    public class PC {
        CPU cpu;
        HardDisk disk;

        void setCpu(CPU cpu) {
            this.cpu = cpu;
        }

        void setHardDisk(HardDisk disk) {
            this.disk = disk;
        }

        void show() {
            System.out.println("这个CPU的速度为:" + cpu.getSeed());
            System.out.println("这个硬盘的容量为:" + disk.getAount());
        }
    }public  class Main {
    public static void mai