java - Can someone tell me what this means? -

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this question has answer here:

while working threads , runnables, popped up...can please tell me means? thank much.

exception in thread "awt-eventqueue-0" java.lang.error: cannot call invokeandwait event dispatcher thread

there thread edt (event dispatcher thread). whatever reason, edt needed call invokeandwait(), either security, visibility, or other cause did not let edt call method. exception thrown awt event queue thread (0), thread manages java.awt.* classes.


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