自动滚动到文本区域的底部 [英] Automatically scroll to the bottom of a text area

问题描述

我有一个带滚动条的文本区域。我定期添加新的文本行。每当添加新行时，我希望文本区域自动滚动到最底部的条目（最新的条目）。我怎样才能做到这一点？

I have a text area with scroll bar. At regular intervals, I am adding new lines of text to it. I would like the text area to automatically scroll to the bottom-most entry (the newest one) whenever a new line is added. How can I accomplish this?

textAreaStatus = new WebTextArea();
scrollPane = new JScrollPane(textAreaStatus);
textAreaStatus.setBackground(Color.black);
textAreaStatus.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));

推荐答案

查看DefaultCaret的updatePolicy属性：it可能做你想做的事情

Have a look at the updatePolicy property of DefaultCaret: it might do what you want

DefaultCaret caret = (DefaultCaret) textArea.getCaret();
caret.setUpdatePolicy(ALWAYS_UPDATE);

A 选项的精彩摘要（@camickr）

A nice summary of options by Rob (@camickr)

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