类习题

自己的习题不喜勿转：

1)编程实现、以电话Phone为父类（例、电话有本机号码、打电话、接电话等属性和功能，当然还有一些其它的特性;
移动电话Mobilephone和固定电话Fixedphone为两个子类，并使移动电话实现接口Moveable，接口里有移动信息功能;
固定电话又有子类、无绳电话Cordlessphone。
设计并定义这几个类，明确它们的继承关系，定义子类时给出子类有别于父类的新特性。(可以自已添加)
2)声明测试类、声明Phone类的数组（含5个元素），生成五个对象存入数组、其中二个Phone类的对象、一个Mobilephone类的对象、一个Fixedphone类的对象和一个Cordlessphone类的对象，打印输出每个对象的某个成员变量。将一个父类的引用指向一个子类对象，用这个塑型后的对象来调用某个方法实现多态性。

Phone类

public class Phone {
private String Number;
private String color;
private String brand;

public void call(){
System.out.println("打电话");
}
public void getCall(){
System.out.println("接电话");
}
public Phone(String number, String color, String brand) {
super();
this.Number = number;
this.color = color;
this.brand = brand;
}
public String getNumber() {
return Number;
}
public String getColor() {
return color;
}
public String getBrand() {
return brand;
}
  }

Mobilephone类

public class Mobilephone extends Phone implements Moveable {
 private int screenSize;
 public void moveMessage(){
 System.out.println("发短信");
 
 }
@Override
public void call() {
System.out.println("移动着打电话");
}
@Override
public void getCall() {
System.out.println("移动着接电话");
}
public Mobilephone(String number, String color, String brand, int screenSize) {
super(number, color, brand);
this.screenSize = screenSize;
}
public int getScreenSize() {
return screenSize;
}
 
}

Fixedphone类

public class Fixedphone extends Phone {
private String locNum;

@Override
public void call() {
System.out.println("固定地点打电话");
}

@Override
public void getCall() {
System.out.println("固定地点接电话");
}

public Fixedphone(String number, String color, String brand, String locNum) {
super(number, color, brand);
this.locNum = locNum;
}

public String getLocNum() {
return locNum;
}


}

Cordlessphone类

public class Cordlessphone extends Fixedphone {
  
public Cordlessphone(String number, String color, String brand, String locNum) {
super(number, color, brand, locNum);

}

@Override
public void call() {
System.out.println("在一定范围内移动着打电话");
}

@Override
public void getCall() {
System.out.println("在一定范围内移动着接电话");
}

}

Moveable接口

public interface Moveable {
public void moveMessage();
}

TestPhone类

public class TestPhone {
public static void main(String[] args) {
Phone p[]= new Phone[5];
p[0] = new Phone("13998373955", "黑色", "samsung");
p[1] = new Phone("13998373966", "白色", "apple");
p[2] = new Mobilephone("13998373911", "蓝色", "XiaoMi", 6);
p[3] = new Fixedphone("83739223", "红色", "ChinaTelecom", "024");
p[4] = new Cordlessphone("73922346", "黄色", "ChinaUnicom","0414");
for (int i = 0; i < 5; i++) {
String s = p[i].getBrand();
System.out.println(s);
p[i].getCall();
}
Phone p1 = new Mobilephone("13998373933", "绿色", "oppo", 5);
p1.call();
}

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