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Asked: 2026-05-27T09:07:27+00:00

The java doc says the append method is thread safe. However, I recall that

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The java doc says the append method is thread safe. However, I recall that when I tried using the append to the text area from different threads (several months ago), I get jumbled text where thread 1 would append some characters and thread 2 would append some other characters.
So instead of getting STRINGstring in the jtextarea, I get SstTrRINingG.

What differences would there be between:

  1. synchronizing the append
  2. bottlenecking appends from different threads through a threadpoolexecutor
  3. using invokeLater on the EDT

or are they all fine for fixing the issue?
Thanks

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1 Answer

  1. Editorial Team

    While append() was thread safe with respect to the EDT, append() in Java 7 is not. Appends using invokeLater() will be processed in the order in which they are enqueued. A critical examination of the other approaches would require an sscce.

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