public class Point { public int x; public int y; public Point(int x,int y) { this.x=x; this.y=y; } public Point() { } public void movePoint(int dx,int dy) { x-=dx; y-=dy; } public String toString() { return "("+x+","+y+")"; } public static void main(String[] args) { Point p=new Point(3,4); p.movePoint(1, 1); System.out.println(p); } }
怎么移动?
{
public int x;
public int y;
public Point(int x,int y)
{
this.x=x;
this.y=y;
}
public Point()
{
}
public void movePoint(int dx,int dy)
{
x-=dx;
y-=dy;
}
public String toString()
{
return "("+x+","+y+")";
}
public static void main(String[] args)
{
Point p=new Point(3,4);
p.movePoint(1, 1);
System.out.println(p);
}
}