java - 在不知道进度的情况下更新 JProgressBar

Question

我想使用 JProgressBar，但我无法衡量完成任务需要多长时间的进度。我的想法是让一个进度条显示关闭过程的状态，但我不知道需要多长时间，而且我无法编辑执行关闭过程的类。

有没有办法在没有任何进度指示的情况下使用 JProgressBar？

Answer 1

调用setIndeterminate(true)。

来自javadocs :

To indicate that a task of unknown length is executing, you can put a progress bar into indeterminate mode. While the bar is in indeterminate mode, it animates constantly to show that work is occurring. As soon as you can determine the task's length and amount of progress, you should update the progress bar's value and switch it back to determinate mode.