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Yes I use this call--> Application.launch(TempGraph.class);
so I launch the application once. How do I have to arrange my structure so I can open a window several times? Should I insert the...

I updated my first post with the import statements

I also attach the MainWeather.form which is the xml file for the GUI.

Lastly here is the error message

really had problem posting my first post due to forum regulations.
so I will continue here :

problem
Find a way to open again the graph without having " Application launch must not be called...

Hello
I am building an arduino weather station that produces a CSV file with all the readings.

I am trying to make a GUI java program that has some buttons (Temp Graph , Hum Graph ,... ) that...