Java, why do my lines always white out in BlueJ?
While typing my code out, some lines automatically get spaced out, and whenever I try to click or type something, more lines disappear in the process, therefore making me delete the class itself. I have encountered this same issue on another system.
I cannot even Ctrl+A my code, help!
Screenshot:
The BlueJ FAQ mentions possible display artifacts on Windows:
There are visual artifacts on the BlueJ windows (black areas, distorted text, etc) in Windows
Visual artifacts - black areas, distorted or missing text, etc - are usually a result of either a display driver bug or a Java bug. Try updating your display drivers (see here for Windows 7) or disabling graphics acceleration (see here).
https://bluej.org/faq.html#win_visual_artifcats
It makes several recommendations for how to fix them:
- update display drivers
- update JDK
- change VM args
Read the linked FAQ for instructions.
The release log also tells a similar story, so make sure you've updated BlueJ:
4.1.0 23 June 2017
Major fixes:
Fixed: Graphical display bug could cause the Java editor and other windows (e.g. Terminal) to turn white and not redraw correctly.
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