[20-05-07][Self-test 38]Java DistanceBetweenPoints

 1 package test_8_2;
 2 
 3 public class Point {
 4 
 5     /**
 6      * 设计一个点类，实例化两个点后，调用方法求两点距离
 7      */
 8     
 9     private double x;
10     private double y;
11     
12     public Point() {
13         
14     }
15     
16     public Point(double x, double y) {
17         
18         this.x = x;
19         this.y = y;
20     }
21     
22     public static double getLength(Point A, Point B) {
23         
24         double area;
25         
26         area = Math.sqrt(Math.pow(A.x - B.x, 2) + Math.pow(A.y - B.y, 2));
27         
28         return area;
29     }
30     
31 }

 1 package test_8_2;
 2 
 3 public class Test {
 4 
 5     public static void main(String[] args) {
 6 
 7         Point aPoint = new Point(0, 3);
 8         Point bPoint = new Point(4, 0);
 9         
10         double area = Point.getLength(aPoint, bPoint);
11         
12         System.out.println("两点的距离为：" + area);
13     }
14 
15 }