point.java

这个程序提供了JAVA很基础的CLASS的应用举例

class point
{
	private int X,Y;
	point(int x,int y)
	{
		X=x;Y=y;
	}
	public int getX(){return X;}
	public int getY(){return Y;}
	public double distance(point a,point b)
	{
		return Math.sqrt((a.getX()-b.getX())*(a.getX()-b.getX())+
		(a.getY()-b.getY())*(a.getY()-b.getY()));
	}
	public static void main(String args[])
	{
		int x1,x2,y1,y2;
		double dis;
		point source=new point(0,0);
		point target=new point(5,8);
		x1=source.getX();
		y1=source.getY();
		x2=target.getX();
		y2=target.getY();
		System.out.println("第一个点的坐标位置是("+x1+","+y1+")");
		System.out.println("第二个点的坐标位置是("+x2+","+y2+")");
	    dis=source.distance(source,target);
	    System.out.println("两个点的距离是："+dis); 
	 }
}