Getting Eclipse to Draw a Line at Column 80

1. Drawing a vertical line on the screen.
   • Make sure you are in Java perspective.
   • From the menu, select "Window", "Preferences", "General", "Editors", "Text Editors".
   • Select the checkbox that says "Show print margin".
   • Type the number 80 into the box that says "Print margin column.".


2. The steps above will draw a vertical line on the screen, but you need to verify that it is in the correct position. In the past there was a bug in Eclipse that would position the line in the wrong place. If this happens in your case, try the following:
   • From the menu, select "Window", "Preferences", "Java", "Code Style", "Formatter".
   • Click the button that says "New". (You need to create a new "profile".)
   • Type in any name you want, perhaps "CMSC", and click "OK".
   • Click the tab that says "Line Wrapping".
   • In the box labeled "Maximum line width" enter the value 80.
   • Click "OK".
   • Click "OK" again.