line.java

可随机画出位置形状均不相同的直线

import java.awt.Graphics;
import javax.swing.JComponent;
public class line extends JComponent
{
	public line()
	{
		super();
	}
	public void paint(Graphics g)
	{
		g.setColor(getBackground());
		g.drawLine(0,0,getHeight(),getWidth());
	}
}