On my Windows system the output window in NetBeans shows all text in Courier New font. This is the so called monospace font of the JDK running NetBeans:
We can change this monospace font so the text in the output window will be shown with the changed font. We must go to the JDK directory which is used to start NetBeans. In the
jre/lib directory is a file with the name
fontconfig.properties.src. We make a copy of this file and name it
fontconfig.properties. We can open the new
fontconfig.properties file in a text editor and look for the line with the text
monospace.plain.alphabetic. We can change Courier New to another font name, for example Monaco. The following screenshot shows the Monaco font in NetBeans:
A side effect is that all monospace fonts in all Java applications started with the JDK have the same changed font...