Java中的Repaint和paintComponent()
我正在从传感器连续读取数据，并希望使用该数据绘制图表。我已经创建了该图表，但是，系统仅在第一次读取时绘制该图表，不会动态更改绘图。
我使用了paintComponent()，并尝试使用重绘来更新它。我发现虽然数据不断更新，但程序执行paintComponent()的次数不会超过一次。
任何解决该问题的建议将不胜感激。
I am reading data continuously from a sensor and want to plot chart using that data. I already create that chart, however, system draws that chart for only the first reading, doesn't change the plot dynamically.
I used paintComponent() and I try to update that by using repaint. I have found that though data updates continuously, but the program doesn't execute paintComponent() for more than one time.
any suggestion to solve that problem would be highly appreciated.
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尝试
validate()或revalidate()，然后
调用
repaint()希望这会有所帮助。
有用的链接：http://docs.oracle。 com/javase/6/docs/api/javax/swing/JComponent.html#revalidate()
Try
validate()orrevalidate()and then,
call
repaint()Hope this will help.
Helpful Link : http://docs.oracle.com/javase/6/docs/api/javax/swing/JComponent.html#revalidate()