How to Draw a Horizontal Line in Java Swing [closed]

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How does 开发者_如何学编程one draw a horizontal line using the Java Swing library? I know that I need to override paint(Graphics g) but I am not sure what to put in the method.

@Override
public void paint(Graphics g)
{
   // What goes here?
}

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Depending on your use case, one of these tutorials should help you:

• The Java Graphics API Tutorial => drawing in a swing component
• The Java Swing Tutorial => using swing components (such as JSeparator)

Here an example class which draws a Black line

public class MyLine extends JPanel
{

     @Override public void paint(Graphics g)
     {
         //Get the current size of this component
         Dimension d = this.getSize();

         //draw in black
         g.setColor(Color.BLACK);
         //draw a centered horizontal line
         g.drawLine(0,d.height/2,d.width,d.height/2);
     }
}

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Just like drawing any other line, except the value for the y axis doesn't change.