JavaExercism/exercises/isogram/HINT.md

If you find that testWorksWithGermanLetters fails even though you think you've implemented it correctly, this could be because of the JVM encoding. Try setting the JAVA_TOOL_OPTIONS environment variable to -Dfile.encoding=UTF8 to fix this.

• To set an environment variable on Windows:

  1. Go to Computer -> Properties -> Advanced System Settings
  2. Add a new environment variable

• To set an environment variable on a mac

• To set an environment variable on linux