I prepare an application uses the result of the command prompt (Runtime.getRuntime (). exec (String cmd)) for a command already entered, and displays it in a Textarea, but I notice that if I use a modal box the problem persists, my problem is that this application is in frensh,if any one can help me to display "" and "" lettres because they appear as a small cube (whatever in the text area or the modal box) if any one know how I can solve the problem because I'm a beginner in java and thank you for any help