分析并说明下面这段程序中MyBox的各个成员。class MyBox
{
static int x,y;
int width,height;
MyBox(){x=0;y=0;width=0;height=0;}
public void setPosition(int xPos,int yPos) (x=xPos; y=yPos;)
public void setSize(int w, int h) {width=w; height=h;}
static int getX() {return x;}
static int getY() {return y;}
protected void draw(Graphics g) {g.drawRect(x,y,width,height);}
}