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en:faq [2014/04/26 09:55] roehneren:faq [2022/10/01 16:43] (aktuell) – Externe Bearbeitung 127.0.0.1
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 +=====FAQ=====
 **1. Can I use the Java-Editor in teaching at school? Can my pupils use it at home?**\\ **1. Can I use the Java-Editor in teaching at school? Can my pupils use it at home?**\\
 Yes, the Java-Editor is freeware, especially developed for teaching purposes. Yes, the Java-Editor is freeware, especially developed for teaching purposes.
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 **9. My Java program doesn't start. What can I do?**\\ **9. My Java program doesn't start. What can I do?**\\
-If your Java program is compiled without errors but your program does not start, it is likely that runtime errors occur during the execution. You can use the //RunJava.bat// file for further analysing the problem. Open the [[Configuration#interpreter|interpreter]] configuration and click on //RunJava.bat// to edit the batch file which is used to start your Java program. Replace //@ECHO OFF// with //@ECHO ON// and insert PAUSE at the end of the file. Save the modified //RunJava.bat// and select //DOS Window// from the [[Java-Editor#window menu|window menu]]. This opens a console window with the folder of RunJava.bat as current folder. Type in RunJava.bat and analyse the error messages.+If your Java program is compiled without errors but your program does not start, it is likely that runtime errors occur during the execution. You can use the //RunJava.bat// file for further analysing the problem. Open the [[Configuration#interpreter|interpreter]] configuration and click on //RunJava.bat// to edit the batch file which is used to start your Java program. Replace //@ECHO OFF// with //@ECHO ON// and insert PAUSE at the end of the file. Save the modified //RunJava.bat// and select //DOS Window// from the [[:start#window_menu|window menu]]. This opens a console window with the folder of RunJava.bat as current folder. Type in RunJava.bat and analyse the error messages.
  
 **10. Is it possible to use a dark background color to relieve the eyes?**\\ **10. Is it possible to use a dark background color to relieve the eyes?**\\
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 **15. Sometimes the Java-Editor crashes without error message. What can I do?**\\ **15. Sometimes the Java-Editor crashes without error message. What can I do?**\\
 Look in your current folder. Is there a file hs_err_pid<number>.log? Then the Java virtual machine caused the crash. Update your Java Runtime Environment to the latest version. http://www.java.com/en/download/manual.jsp Look in your current folder. Is there a file hs_err_pid<number>.log? Then the Java virtual machine caused the crash. Update your Java Runtime Environment to the latest version. http://www.java.com/en/download/manual.jsp
 +
 +**16. Why is the GUI-App on my Surface so small?**\\
 +Swing-Applications are not DPI-aware. A workaround is described at:
 +https://stackoverflow.com/questions/30555401/java-disable-dpi-aware-not-working\\
 +Use Java FX instead of Swing.
 +
 +**17. Why does the debugger don't show parameters and local variables?**\\
 +You need the compiler parameter "-g". Set Java compiler parameter to standard ("-deprecation -g) in the configuration.
 +
 +**18. How can I use the serial interface?**\\
 +The package jSerialComm.jar is integrated via Classpath-User. A description of the API is available at https://fazecast.github.io/jSerialComm/
 +
 +**19. Why doesn't the download work during the update?**\\
 +A change in Windows is responsible for the fact that the download no longer works up to version 19.31.
 +Download the current version and install it over your previous version.
  
en/faq.1398498916.txt.gz · Zuletzt geändert: 2014/04/26 09:55 von roehner