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Overview Java commands! java vs javaw

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Java Tools: Part 2.

Question: All known to me Java commands have the option "-help". But "javaw" does not show any options... Why? How I supposed to use it?

Answer: The javaw is almost identical to "java" command, except never produces any output text since the javaw has no associated console window. It means that you can not use any options that are supposed to work with information output in text form or produces text output. However, if you get an error during your application lunch or runtime error you will get a dialog box with error information.

Below is the list with options that do not work with "javaw" command:

  • -verbose
  • -verbose:class Display information about each class loaded.
  • -verbose:gc Report on each garbage collection event.
  • -verbose:jni Report information about use of native methods and other Java Native Interface activity.
  • -version Display version information and exit.
  • -showversion Display version information and continue.
  • -?
  • -help Display usage information and exit.

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