关于画椭圆的问题

import java.awt.Graphics;
import javax.swing.JApplet;
import javax.swing.JOptionPane;
public class DrawOval extends JApplet{
int x,y,length,width;
public void init()
{
  String xs,ys,lengths,widths;
  
  xs = JOptionPane.showInputDialog("Enter posX");
  ys = JOptionPane.showInputDialog("Enter posY");
  widths = JOptionPane.showInputDialog("Enter width");
  lengths = JOptionPane.showInputDialog("Enter length");
  
  x = Integer.parseInt(xs);
  y = Integer.parseInt(ys);
  width = Integer.parseInt(widths);
  length = Integer.parseInt(lengths);
}
public void paint(Graphics g)
{
  super.paint(g);
  g.drawOval(x,y,width,length);
}
}

//怎么我运行的时候，只是画了半个椭圆？
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我运行了，没问题啊
----------------解决方案--------------------------------------------------------
解决了！
----------------解决方案--------------------------------------------------------