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  • 机动车

    package liu0919;
    
    public class Jidongche 
    {
    	private String number;//车牌
    	private int  speed;//车速
    	private double load;//载重
    	private String xinxi;
    	//无参有返回值
    	public String getNumber() {
    		return number;
    	}
    	public void setNumber(String number) {
    		this.number = number;
    	}
    	public int getSpeed() {
    		return speed;
    	}
    	public void setSpeed(int speed) {
    		this.speed = speed;
    	}
    	public double getLoad() {
    		return load;
    	}
    	public void setLoad(double load) {
    		this.load = load;
    	}
    	 public double addSpeed(int sd)
    	    {
    	        speed+=sd;
    	        return speed;
    	    }
    	 public int downSpeed(int sd)
    	    {
    	           speed-=sd;
    	           return speed;
    	    }

          //构造方法 Jidongche() { number="XX1234"; speed=100; load=100; } Jidongche(String number,int speed,double load) { this.number=number; this.speed=speed; this.load=load; } //有参无返回值 void Xinxi(String n,int s,double l) { xinxi=n+s+l; System.out.println("机动车2的车牌号是:"+n+"车速:"+s+"载重:"+l); } }

      

    package liu0919;
    
    public class Ceshi_jidongche {
    
    	public static void main(String[] args) {
    		Jidongche jd=new Jidongche ();
    		jd.setNumber("XX1234");
    		System.out.println("车牌号是:"+jd.getNumber());
    		
    		jd.setLoad(100);
    		System.out.println("载重是:"+jd.getLoad());
    		
    		jd.setSpeed(100);
    		System.out.println("车速是:"+jd.getSpeed());
    		System.out.println("机动车1的车牌是:"+jd.getNumber()+"载重:"+jd.getLoad()+"车速:"+jd.getSpeed());
    		//调用无参数的构造方法
    		jd.setNumber("辽A9752");
    		System.out.println("修改车牌号是:"+jd.getNumber());
    		System.out.println("加速后为:"+jd.addSpeed(20));
    		
    		//有参数的
    		
    		Jidongche jd2=new Jidongche ("辽B5086", 150, 200);
    		jd2.Xinxi("辽B5086", 150, 200);
    		System.out.println("减速后为:"+jd2.downSpeed(20));
    		
    
    	}
    
    }
    

      

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  • 原文地址:https://www.cnblogs.com/liuyanzeng/p/5886606.html
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