Change font in Greenfoot

1) Go to Greenfoot\lib\bluej.defs
2) Find lines
 # The editor font. This is the name of a font face with an optional
 # "-bold" at the end. Most used are monospaced fonts, such as Courier.
 # Good large fonts for screen projections are SansSerif-bold, 14pt, or
 # Courier-bold, 18pt. Only the font face is specified here, the font
 # size is specified in the BlueJ preference dialogue. Some examples:

 bluej.editor.font=Monospaced
 bluej.editor.MacOS.font=Monaco
 # bluej.editor.font=Monospaced-bold
 # bluej.editor.font=SansSerif
 # bluej.editor.font=SansSerif-bold
 # bluej.editor.font=Arial-bold

3) Change "bluej.editor.font=Monospaced" with "bluej.editor.font=Consolas"