按要求编写Java应用程序。 创建一个叫做机动车的类： 属性：车牌号(String)，车速(int)，载重量(double) 功能：加速(车速自增)减速(车速自减)修改车牌号，查询车的载重量(代码片段

Posted 2020-08-09

package com.hanqi.test;

public class jidongche {
	private String chepaihao;//车牌号
	private int speed;//速度
	private double weight;//载重量
	//无参构造方法
	jidongche()
	{
		
	}
	public String getChepaihao() {
		return chepaihao;
	}
	public void setChepaihao(String chepaihao) {
		this.chepaihao = chepaihao;
	}
	public int getSpeed() {
		return speed;
	}
	public void setSpeed(int speed) {
		this.speed = speed;
	}
	public double getWeight() {
		return weight;
	}
	public void setWeight(double weight) {
		this.weight = weight;
	}
	//有参构造方法
	jidongche(String cph,int sp,double wh)
	{
		chepaihao=cph;
		speed=sp;
		weight=wh;
		
	}
	//设置成员方法
	public int getAddspeed(int add)
	{
		return speed+=add;
	}

	public int getjianspeed(int jian)
	{
		return speed-=jian;
	}
	public void setchepaihap(String chage)
	{
		chepaihao=chage;
	}
	

　　

jidongche jdc=new jidongche();
        jdc.setChepaihao("xx1234");
        jdc.setSpeed(100);
        jdc.setWeight(100);
        System.out.println("无参构造方法车牌号为："+jdc.getChepaihao()+"\r速度为："+jdc.getSpeed()+"\r载重量为："+jdc.getWeight());
        
        
        jdc.setChepaihao("辽A9752");
        jdc.getAddspeed(30);
        System.out.println("无参构造方法将车牌号改为："+jdc.getChepaihao()+"\r速度增加到："+jdc.getSpeed());
        
        jidongche jdc1=new jidongche("xx1234", 150, 100);
        jdc1.getjianspeed(30);
        jdc1.setchepaihap("辽B5086");
        System.out.println("有参构造方法将车牌号改为："+jdc1.getChepaihao()+"\r速度减为："+jdc1.getSpeed());
        System.out.println("该车辆的载重量为："+jdc1.getWeight());