面向对象练习（6）

抽象类与接口

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目录

1.利用接口实现手机

接口

类图

测试类

2.打印机

接口

类

测试类：

3.组装计算机

接口：

类

测试类：

4.防盗门问题

接口：

类

测试类

5.利用接口实现简单计算

接口

类

测试类

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1.利用接口实现手机

        编写测试类，让普通手机播放音频、发信息和通电话，让智能手机上网、播放视频、照相、发信息和通电话。

接口

package dh06.phone;
//接口：上网
public interface NetWork {
	void netWorkConn();
}

package dh06.phone;
//接口：播放能力
public interface PlaySth {
	void play(String content);
}

package dh06.phone;
//接口：拍照能力
public interface TakePhoto {
	void takePhotos();
}

类图

父类：

package dh06.phone;

//抽象类--手机类
public abstract class Phone {
	private String brand;// 品牌
	private String type;// 型号

	public Phone() {
	}

	public Phone(String brand, String type) {
		this.brand = brand;
		this.type = type;
	}

	// 输出手机信息
	public void showInfo() {
		System.out.println("这是一台" + brand + type + "手机");
	}

	// 打电话
	public abstract void call();

	// 发信息
	public abstract void sendMsg();

//-------------------------------------------
	public String getBrand() {
		return brand;
	}

	public void setBrand(String brand) {
		this.brand = brand;
	}

	public String getType() {
		return type;
	}

	public void setType(String type) {
		this.type = type;
	}
//-------------------------------------------
}

子类：

package dh06.phone;

//原始的普通手机，只有播放功能

public class CommonPhone extends Phone implements PlaySth {

	public CommonPhone() {

	}

	public CommonPhone(String brand, String type) {
		super(brand, type);
	}

	public void play(String content) {
		System.out.println("正在播放《" + content + "》");
	}

	public void call() {
		System.out.println("正在语音通话。。。。。。。。。。");
	}

	public void sendMsg() {
		System.out.println("正在发送信息。。。。。。");
	}

}

package dh06.phone;

//智能手机：具备上网、拍照、播放能力
public class SmartPhone extends Phone implements NetWork, TakePhoto, PlaySth {

	public SmartPhone() {

	}

	public SmartPhone(String brand, String type) {
		super(brand, type);
	}

	//播放音频和视频
	public void play(String content) {
		System.out.println("正在播放《" + content + "》");
	}

	//拍照
	public void takePhotos() {
		System.out.println("卡擦，拍了一张美图。。。。。");
	}
	//上网
	public void netWorkConn() {
		System.out.println("连接上了WIFI网络。。。。。");
	}
	//打电话
	public void call() {
		System.out.println("正在视频通话中。。。。。");
	}
	//发信息
	public void sendMsg() {
		System.out.println("正在发送文字+图片+音频的信息。。。。。");
	}

}

测试类

package dh06.phone;
//测试类-手机
public class Test {

	public static void main(String[] args) {
		CommonPhone phone1 = new CommonPhone("诺基亚","TS"); 
		phone1.sendMsg();
		phone1.call();
		phone1.play("慢慢喜欢你");
		System.out.println("********************************");
		SmartPhone phone2 = new SmartPhone("iPhone","14promax") ;
		phone2.sendMsg();
		phone2.call();
		phone2.play("哪吒");
		phone2.netWorkConn();
		phone2.takePhotos();
	
	}

}

2.打印机

接口

package dh06.box;
//接口：代表生产墨盒的标准或约定
public interface InkBox {
	//墨盒颜色
	public String getColor();
}

package dh06.box;
//接口：代表生产纸张的标准或约定
public interface Paper {
	//纸张大小
	String getSize();
}

类

package dh06.box;
//彩色墨盒
public class ColorInkBox implements InkBox{

	//墨盒颜色
	public String getColor() {
	
		return "彩色" ;
	}

}

package dh06.box;
//彩色墨盒
public class WhiteBlackInkBox implements InkBox{

	//墨盒颜色
	public String getColor() {
	
		return "黑白" ;
	}

}

package dh06.box;
//生产A4纸张
public class A4Paper implements Paper {


	public String getSize() {
		
		return "A4纸" ;
	}

}

package dh06.box;
//生产B5纸张
public class B5Paper implements Paper {


	public String getSize() {
		
		return "B5纸" ;
	}

}

package dh06.box;
//打印机类
public class Printer {
	//墨盒 纸张
	InkBox inkBox;
	Paper paper;
	
	
	//安装墨盒

	public InkBox getInkBox() {
		return inkBox;
	}

	public void setInkBox(InkBox inkBox) {
		this.inkBox = inkBox;
	}
	
	
	//往打印机中防纸
	public Paper getPaper() {
		return paper;
	}

	public void setPaper(Paper paper) {
		this.paper = paper;
	}
	
	//使用墨盒在纸张上打印
	public void print(InkBox inkBox,Paper paper) {
		System.out.println("使用"+inkBox.getColor()+"的墨盒在"+paper.getSize()+"的纸张上打印。");
	}
//--------------------------------------------------------------------------

	
}

测试类：

package dh06.box;

//测试类
public class Test {
	public static void main(String[] args) {
		//声明墨盒和纸张对象
		InkBox inkBox = null;
		Paper paper = null;
		// 创建打印机
		Printer printer = new Printer();
	
		// 彩色打印A4纸
		inkBox = new ColorInkBox();	
		paper = new A4Paper();
		//调用
		printer.print(inkBox,paper);
		// 黑白打印B5纸
		inkBox = new WhiteBlackInkBox();	
		paper = new B5Paper();
		//调用
		printer.print(inkBox,paper);
		
		
	}
}

3.组装计算机

接口：

package dh06.assemble;
//cpu接口
public interface CPU {
	public String brand();//品牌
	public String HZ();//主频
}

package dh06.assemble;
//内存接口
public interface EMS {
	public String type();//类型
	public String EMSLoad();//容量
	
}

package dh06.assemble;
//硬盘接口
public interface HardDisk {
	public String HDLoad();//容量
}

类

package dh06.assemble;

public class AMDCPU implements CPU{

	@Override
	public String brand() {
	
		return "AMD";
	}

	@Override
	public String HZ() {
		
		return "2.6HZ";
	}

}

package dh06.assemble;

public class JSDEMS implements EMS {

	@Override
	public String type() {
	
		return "金士顿";
	}

	@Override
	public String EMSLoad() {
	
		return "8G";
	}

}

package dh06.assemble;

public class SSDHardDisk implements HardDisk {

	@Override
	public String HDLoad() {
	
		return "1T SSD";
	}

}

---

package dh06.assemble;

public class IntelCPU implements CPU{

	@Override
	public String brand() {
	
		return "intel";
	}

	@Override
	public String HZ() {
		
		return "2.2HZ";
	}

}

package dh06.assemble;

public class YCEMS implements EMS {

	@Override
	public String type() {
	
		return "影驰";
	}

	@Override
	public String EMSLoad() {
	
		return "16G";
	}

}

package dh06.assemble;

public class SataHardDisk implements HardDisk {

	@Override
	public String HDLoad() {
	
		return "2T Sata";
	}

}

---

package dh06.assemble;

//组装计算机
public class Computer {
	//初始化参数
	private CPU cpu = new AMDCPU();
	private EMS ems = new JSDEMS();
	private HardDisk hardDisk = new SSDHardDisk() ;
	

	
//-----------------------------------------------------
	public CPU getCpu() {
		return cpu;
	}
	public EMS getEms() {
		return ems;
	}
	public HardDisk getHardDisk() {
		return hardDisk;
	}
	public void setCpu(CPU cpu) {
		this.cpu = cpu;
	}
	public void setEms(EMS ems) {
		this.ems = ems;
	}
	public void setHardDisk(HardDisk hardDisk) {
		this.hardDisk = hardDisk;
	}
	
//-----------------------------------------------------	
	
	//组装
	public void print() {
		System.out.println("计算机已组装完成");
		System.out.println("CPU品牌为："+cpu.brand()+"\t主频为："+cpu.HZ());
		System.out.println("内存类型为："+ems.type()+"\t容量为："+ems.EMSLoad());
		System.out.println("硬盘容量为："+hardDisk.HDLoad());
	}

	
}

测试类：

package dh06.assemble;

//测试类
public class Test {

	public static void main(String[] args) {

		Computer computer1 = new Computer();
		AMDCPU amdcpu = new AMDCPU();//AMDCPU
		JSDEMS jsdems = new JSDEMS();//金士顿ems
		SSDHardDisk ssdHardDisk = new SSDHardDisk();//ssd
		
		computer1.setCpu(amdcpu);
		computer1.setEms(jsdems);
		computer1.setHardDisk(ssdHardDisk);
		//打印
		computer1.print();
		System.out.println("**********************************");
		//---------------------------------------------------
		Computer computer2 = new Computer();
		IntelCPU intelCPU = new IntelCPU();//IntelCPU
		YCEMS ycems = new YCEMS();//影驰EMS
		SataHardDisk sataHardDisk = new SataHardDisk();//Sata

		computer2.setCpu(intelCPU);
		computer2.setEms(ycems);
		computer2.setHardDisk(sataHardDisk);
		//打印
		computer2.print();
		
	
	}

}

4.防盗门问题

接口：

package dh06.door;
//锁：开锁、上锁
public interface Lock {
	
	public void lockUp();//上锁方法
	
	public void openLock();//开锁方法
	
	
}

package dh06.door;
//门铃：拍照存储功能
public interface DoorBell {
	public void takePictures();
}

类

package dh06.door;
//门--抽象类
public abstract class Door {
	public abstract void open();//开
	public abstract void close();//关
}

package dh06.door;

//防盗门：是门，具备锁的能力
public class TheftproofDoor extends Door implements Lock , DoorBell {
	// 上锁
	public void lockUp() {
		System.out.println("插进钥匙，向左转三圈，锁上了，拔出钥匙。");
	}

	//开锁
	public void openLock() {
		System.out.println("插进钥匙，向右转三圈，锁开了，拔出钥匙。");
	}

	//开门
	public void open() {
		System.out.println("用力推，门打开了");
	}

	//关门
	public void close() {
		System.out.println("轻轻拉门，门关上了");
	}

	//按门铃拍照存储
	public void takePictures() {
		System.out.println("铃铃铃。。。。。咔嚓。。。拍照存储。");
		
	}

}

测试类

package dh06.door;
//测试防盗门功能
public class Test {

	public static void main(String[] args) {
		TheftproofDoor door = new TheftproofDoor();
		//关门上锁
		door.close();
		door.lockUp();
		//拜访
		door.takePictures();
		//开锁开门
		door.openLock();
		door.open();

	}

}

5.利用接口实现简单计算

接口

package dh06.test01;
/**
 * Compute接口
 * @author XXX
 * 
 */
public interface Compute {
	public int computer(int n,int m);
}

类

package dh06.test01;
//计算类   +
public class CalAdd implements Compute{

	@Override
	public int computer(int n, int m) {
		// TODO Auto-generated method stub
		return (n + m);
	}
	
}

package dh06.test01;
//计算类   -
public class CalSub implements Compute{

	@Override
	public int computer(int n, int m) {
		// TODO Auto-generated method stub
		return (n - m);
	}

}

package dh06.test01;
//计算类   *
public class CalMul implements Compute{

	@Override
	public int computer(int n, int m) {
		// TODO Auto-generated method stub
		return (n * m);
	}
	
}

package dh06.test01;

//计算类  /
public class CalDiv implements Compute {

	@Override
	public int computer(int n, int m) {
		if (m == 0) {
			System.out.println("分母为空！！！");
			return 0;
		} else {
			return n / m;
		}

	}

}

---

package dh06.test01;

//UseCompute类
public class UseCompute {

	public void useCom(Compute com, int one, int two) {
		System.out.println(com.computer(one, two));
	}
}

测试类

package dh06.test01;
// 测试类
public class Test {

	public static void main(String[] args) {

		UseCompute useCompute = new UseCompute();
		
		useCompute.useCom(new CalAdd(), 5, 5);//  +
		useCompute.useCom(new CalSub(), 5, 5);//  -
		useCompute.useCom(new CalMul(), 5, 5);//  *
		useCompute.useCom(new CalDiv(), 5, 5);//  /
	
	}

}