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1.机器人类及其子类
设计一个机器人的抽象类,具有质量(double)、名字(String)等属性;具有设置属性值方法和获得并打印属性值的方法,还有一个运动的抽象方法move()。设计电动汽车类和飞行器类,这两个类继承机器人抽象类,实现抽象方法,并在抽象方法中打印输出“我是电动汽车,我在地上跑!”(电动汽车类),以及“我是飞行器,我在天上飞!”(飞行器类)。设计测试类,分别生成电动汽车和飞行器的实例,分别按顺序输入名字和质量,并调用获得名字的方法输出名字,调用抽象方法打印对应信息。
输入描述:分两行输入电动汽车信息和飞行器信息
输出描述:分别输出电动汽车名字、运动信息。
运行结果:
源码:
package rotdome;import java.util.Scanner;public class RotDome {public static void main(String[] args) {// TODO Auto-generated method stubScanner in = new Scanner(System.in);String name = in.next();double weight = in.nextDouble();String name1 = in.next();double weight1 = in.nextDouble();Rot car1 = new Car();car1.setName(name);car1.setQuality(weight);System.out.println(car1.toSting());car1.move();Rot plan1 = new Plan();plan1.setName(name1);plan1.setQuality(weight1);System.out.println(plan1.toSting());plan1.move();in.close();}}abstract class Rot {protected double weight;protected String name;public double getQuality() {return weight;}public void setQuality(double quality) {this.weight = quality;}public String getName() {return name;}public void setName(String name) {this.name = name;}abstract public void move();public String toSting() {return "name:" + name + " weight:" + weight + "KG";}
}class Car extends Rot {public void move() {System.out.println("I am automobile,I am running on the ground!");}
}class Plan extends Rot {public void move() {System.out.println("I am aircraft,I am flying in the sky!");}
}
2.创建电源接口及对子类进行充放电
一个电源接口,有一个输入电压的整型常量,值为220;设计两个抽象方法:1)充电方法,addPower();2)放电方法,discharge()。
设计电动汽车类,设置名字(String)、充电电压(double)和放电量(int)属性,实现构造方法、基本的输入输出方法和电源接口,实现充电方法,输出:
name:XXX vehicle, I am charging…
input voltage:XXX charging voltage:XXX”。
实现放电方法,输出:
name:XXX vehicle, I will discharge XXX degrees, I am discharging…
设计电脑类,设置名字(String)、充电功率(int)和放电电压(double)属性,实现构造方法、基本的输入输出方法和电源接口。实现充电方法,输出:
name:XXX notebook, I am charging…
input voltage:XXXV charging power:XXW
实现放电方法,输出:
name:XXX notebook, will discharge.
Discharge voltage:XXXV,I am discharging…
设计主测试类,输入名字、充电电压和放电量),生成电动汽车的实例,依次调用充电方法和放电方法。输入名字、充电功率和放电电压,生成电脑的实例,依次调用充电方法和放电方法。
输入描述
第一行输入电动汽车信息(名字 充电电压 放电量)
第二行输入电脑信息(名字 充电功率 放电电压)
输出描述
分别输出电动汽车、电脑充电、放电信息
运行结果:
源码:
package plugDome;import java.util.Scanner;public class PlugDome {public static void main(String[] args) {// TODO Auto-generated method stubScanner in = new Scanner(System.in);//电动汽车类输入String name = in.next();double avoltage = in.nextDouble();int dvoltage = in.nextInt();//电脑类输入String name1 = in.next();int chargingpower = in.nextInt();double dvoltage1 = in.nextDouble();Plug E1 = new ElectricVehicle(name,avoltage,dvoltage);//new一个ElectricVehicle对象E1Plug C1 = new Computer(name1,chargingpower,dvoltage1);//同理E1.addPower();E1.discharge();C1.addPower();C1.discharge();in.close();}}
interface Plug{int Voltage = 220;public void addPower();//充电——抽象方法public void discharge();//放电——抽象方法
}
class ElectricVehicle implements Plug{private String name;private double avoltage;private int dvoltage;public ElectricVehicle(String name,double avoltage,int dvoltage) {this.name = name;this.avoltage = avoltage;this.dvoltage = dvoltage;}public String getName() {return name;}public void setName(String name) {this.name = name;}public double getAvoltage() {return avoltage;}public void setAvoltage(double avoltage) {this.avoltage = avoltage;}public int getDvoltage() {return dvoltage;}public void setDvoltage(int dvoltage) {this.dvoltage = dvoltage;}//实现接口中的抽象方法public void addPower() {System.out.println("name:"+name+" vehicle,I am charging..."+"\n"+"input voltage:"+Voltage+"V charging voltage:"+avoltage+"V");}public void discharge() {System.out.println("name:"+name+" vehicle,I will discharge "+dvoltage+" degrees,I am discharging...");}
}
class Computer implements Plug{private String name;private int chargingpower;private double dvoltage;public Computer(String name,int chargingpower,double dvoltage) {this.name = name;this.chargingpower = chargingpower;this.dvoltage = dvoltage;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getChargingpower() {return chargingpower;}public void setChargingpower(int chargingpower) {this.chargingpower = chargingpower;}public double getDvoltage() {return dvoltage;}public void setDvoltage(double dvoltage) {this.dvoltage = dvoltage;}//实现接口中的抽象方法public void addPower() {System.out.println("name:"+name+" notebook,I am charging..."+"\n"+"input voltage:"+Voltage+"V charging power:"+chargingpower+"W");}public void discharge() {System.out.println("name:"+name+" notebook,I will discharge."+"\n"+"Discharge voltage:"+dvoltage+"V,I am discharging...");}
}
END:我选择了去做,就别试图打断我。