计算俩点距离-Java

这里有个待完善的程序，其实是java版的计算两点距离。但在java中，我们并不是只关心计算距离，我们关注的是计算距离的起点和终点。我们的思想是不断完善这个点类，使之不仅能计算距离，还能支持更多功能，从而在各种程序中复用。这就是面向对象的思想。下面的程序就是以点为中心构建类，并支持计算距离。请大家完善这个程序。

import java.util.Scanner;

public class javaTest {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		double x1,y1,x2,y2;
		Scanner sc=new Scanner(System.in);
		while(sc.hasNext()) {
		x1=sc.nextDouble();
		y1=sc.nextDouble();
		x2=sc.nextDouble();
		y2=sc.nextDouble();
		Point p1=new Point(x1,y1);
		Point p2=new Point(x2,y2);
		double d=dist(p1, p2);
		System.out.printf("The distance is %.2fn", d);
		}
	}
	
	static double dist(************, ************)
	{  
		double s;
		double dx=********************;
		double dy=********************;
		s=Math.sqrt(dx*dx+dy*dy);
		return s;
	}
}

class **********	
{  	
	******** double x,y;
	********(double a,double b)
	{ x=a;y=b;}
	public double getX() {
		return x;}
	public void setX(double x) {
		this.x = x;}
	public double getY() {
		return y;}
	public void setY(double y) {
		this.y = y;}	
};

来源
java基础训练 by wl

import java.util.Scanner;
 
public class javaTest{
 
public static void main(String[] args) {
    // TODO Auto-generated method stub
    double x1,y1,x2,y2;
    Scanner sc=new Scanner(System.in);
    while(sc.hasNext()) {
    x1=sc.nextDouble();
    y1=sc.nextDouble();
    x2=sc.nextDouble();
    y2=sc.nextDouble();
    Point p1=new Point(x1,y1);
    Point p2=new Point(x2,y2);
    double d=dist(p1,p2);
    System.out.printf("The distance is %.2fn", d);
    }
    sc.close();
}
 
    static double dist(Point p1,Point p2) 
    {
    double s;
    double dx=Math.abs(p2.getX()-p1.getX());
    double dy=Math.abs(p2.getY()-p1.getY());
    s=Math.sqrt(dx*dx+dy*dy);
    return s;
    }
    }
 
    class Point
    { 
 
    public double x,y;
    public Point(double a,double b){ 
        x=a;y=b;
        }
 
    public double getX() {
    return x;
    }
 
    public void setX(double x) {
    this.x = x;
    }
 
    public double getY() {
    return y;
    }
 
    public void setY(double y) {
    this.y = y;
    } 
    }