point.java

定义了几个类

package p2;

public class Point 
  {
  public	 int x,y;
  	public Point(){}
  public	 Point(int x,int y)
  	 {
  	 	this.x=x;this.y=y;
  	 }
  public	 int getx()
  	 {
  	 	return x;
  	 }
  public	 int gety()
  	 {
  	 	return y;
  	 }
 public  double distance(Point p)
  	 {
  	 	int a,b;
  	 	a=x-p.getx();
  	 	b=y-p.gety();
  	 	return Math.sqrt(a*a+b*b);
  	 }
  }