FULL PRODUCT VERSION :
1.8.0_20

ADDITIONAL OS VERSION INFORMATION :
Windows 8.1 64bit

A DESCRIPTION OF THE PROBLEM :
public class GameWindow extends java.awt.Frame {

    public void paint(Graphics g) { //g is a SunGraphics2D
        //HERE: drawLine paints 3 pixels !!!
        g.drawLine( 10, 10, 11, 10);
    }
}


REPRODUCIBILITY :
This bug can be reproduced always.