404. That’s an error.

The requested URL /bookmarks/mark?op=edit&output=popup&bkmk=http%3A%2F%2Fwww.java-forums.org%2Fnew-java%2F84565-java-2d-game-implementing-simultaneous-keystrokes.html&title=Java+2D+Game%3A+Implementing+Simultaneous+Keystrokes was not found on this server. That’s all we know.