package com.cpu;public interface Cpu {public String xinHao();public String zhuPin();
}

package com.cpu;public class CpuBrand implements Cpu{@Overridepublic String xinHao() {// TODO Auto-generated method stubreturn "Intel";}@Overridepublic String zhuPin() {// TODO Auto-generated method stubreturn "3.8GHz";}}

package com.EMS;public interface Ems {public String EMS();
}

package com.EMS;public class EmsCapacity implements Ems {@Overridepublic String EMS() {// TODO Auto-generated method stubreturn "3000GB";}}

package com.HardDisk;public interface HardDisk {public String hardDisk();
}

package com.HardDisk;public class HardDiskCapacity implements HardDisk {@Overridepublic String hardDisk() {// TODO Auto-generated method stubreturn "4GB";}}

package com.master;import com.EMS.Ems;
import com.HardDisk.HardDisk;
import com.cpu.Cpu;
/*** 电脑类*/
public class Computer {private Cpu cpu;private Ems ems;private HardDisk hardDisk;public Cpu getCpu() {return cpu;}public void setCpu(Cpu cpu) {this.cpu = cpu;}public Ems getEms() {return ems;}public void setEms(Ems ems) {this.ems = ems;}public HardDisk getHardDisk() {return hardDisk;}public void setHardDisk(HardDisk hardDisk) {this.hardDisk = hardDisk;}public void print() {System.out.println("计算机的信息如下：");System.out.println("CPU的品牌是："+cpu.xinHao()+",主频是"+cpu.zhuPin());System.out.println("硬盘容量是："+ems.EMS());System.out.println("内存容量是："+hardDisk.hardDisk());}}

package com.master;import com.EMS.Ems;
import com.EMS.EmsCapacity;
import com.HardDisk.HardDisk;
import com.HardDisk.HardDiskCapacity;
import com.cpu.Cpu;
import com.cpu.CpuBrand;public class TestComputer {public static void main(String[] args) {Cpu cpu = new CpuBrand();Ems ems = new EmsCapacity();HardDisk hardDisk = new HardDiskCapacity();Computer computer = new Computer();computer.setCpu(cpu);computer.setEms(ems);computer.setHardDisk(hardDisk);computer.print();}
}