blocks|key|3919646|text|正如Fredrik在his+answer中提到的，实现这一点的简单方法是将JTextArea放在JScrollPane中。这将允许滚动JTextArea的视图区域。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3919647|为了完整起见，下面是如何实现它的：|3919648|JTextArea+ta+=+new+JTextArea();
JScrollPane+sp+=+new+JScrollPane(ta);+++//+JTextArea+is+placed+in+a+JScrollPane.|code-block|syntax|javascript|3919649|一旦JTextArea包含在JScrollPane中，就应该将JScrollPane添加到文本区所在的位置。在下面的示例中，将具有滚动条的文本区域添加到JFrame|3919650|JFrame+f+=+new+JFrame();
f.getContentPane().add(sp);|3919651|感谢kd304在评论中提到应该将JScrollPane而不是JTextArea添加到容器中--我认为将文本区域本身添加到目标容器而不是带有文本区域的滚动窗格是一个常见的错误。|3919652|The+Java+Tutorials的以下文章提供了更多详细信息：|3919653|3919654|How+to+Use+Scroll+Panes|unordered-list-item|3919655|How+to+Use+Text+Areas|3919656|3919657|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/1052473/scrollbars-in-jtextarea/1052481#1052481|1|http://java.sun.com/javase/6/docs/api/javax/swing/JTextArea.html|2|http://java.sun.com/javase/6/docs/api/javax/swing/JScrollPane.html|3|http://java.sun.com/docs/books/tutorial/index.html|4|http://java.sun.com/docs/books/tutorial/uiswing/components/scrollpane.html|5|http://java.sun.com/docs/books/tutorial/uiswing/components/textarea.html^0|11|9|1C|B|1V|9|A|A|0|11|9|1|1C|B|2|0|0|0|2|9|E|B|V|B|24|6|0|0|G|B|U|9|0|0|I|3|0|0|0|N|4|0|0|L|5|0|0^^$0|@$1|2|3|4|5|6|7|1J|8|@$9|1K|A|1L|B|C]|$9|1M|A|1N|B|C]|$9|1O|A|1P|B|C]]|D|@$9|1Q|A|1R|1|1S]|$9|1T|A|1U|1|1V]|$9|1W|A|1X|1|1Y]]|E|$]]|$1|F|3|G|5|6|7|1Z|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|20|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|21|8|@$9|22|A|23|B|C]|$9|24|A|25|B|C]|$9|26|A|27|B|C]|$9|28|A|29|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|2A|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|2B|8|@$9|2C|A|2D|B|C]|$9|2E|A|2F|B|C]]|D|@]|E|$]]|$1|S|3|T|5|6|7|2G|8|@]|D|@$9|2H|A|2I|1|2J]]|E|$]]|$1|U|3|-4|5|6|7|2K|8|@]|D|@]|E|$]]|$1|V|3|W|5|X|7|2L|8|@]|D|@$9|2M|A|2N|1|2O]]|E|$]]|$1|Y|3|Z|5|X|7|2P|8|@]|D|@$9|2Q|A|2R|1|2S]]|E|$]]|$1|10|3|-4|5|6|7|2T|8|@]|D|@]|E|$]]|$1|11|3|-4|5|6|7|2U|8|@]|D|@]|E|$]]]|12|$13|$5|14|15|16|E|$17|18]]|19|$5|14|15|16|E|$17|1A]]|1B|$5|14|15|16|E|$17|1C]]|1D|$5|14|15|16|E|$17|1E]]|1F|$5|14|15|16|E|$17|1G]]|1H|$5|14|15|16|E|$17|1I]]]]

As Fredrik mentions in <a href="https://stackoverflow.com/questions/1052473/scrollbars-in-jtextarea/1052481#1052481">his answer</a>, the simple way to achieve this is to place the <a href="http://java.sun.com/javase/6/docs/api/javax/swing/JTextArea.html" rel="noreferrer"><code>JTextArea</code></a> in a <a href="http://java.sun.com/javase/6/docs/api/javax/swing/JScrollPane.html" rel="noreferrer"><code>JScrollPane</code></a>. This will allow scrolling of the view area of the <code>JTextArea</code>.

Just for the sake of completeness, the following is how it could be achieved:

<pre><code>JTextArea ta = new JTextArea();
JScrollPane sp = new JScrollPane(ta); // JTextArea is placed in a JScrollPane.
</code></pre>

Once the <code>JTextArea</code> is included in the <code>JScrollPane</code>, the <code>JScrollPane</code> should be added to where the text area should be. In the following example, the text area with the scroll bars is added to a <code>JFrame</code>:

<pre><code>JFrame f = new JFrame();
f.getContentPane().add(sp);
</code></pre>

Thank you kd304 for mentioning in the comments that one should add the <code>JScrollPane</code> to the container rather than the <code>JTextArea</code> -- I feel it's a common error to add the text area itself to the destination container rather than the scroll pane with text area.

The following articles from <a href="http://java.sun.com/docs/books/tutorial/index.html" rel="noreferrer">The Java Tutorials</a> has more details:

<ul>
<li><a href="http://java.sun.com/docs/books/tutorial/uiswing/components/scrollpane.html" rel="noreferrer">How to Use Scroll Panes</a></li>
<li><a href="http://java.sun.com/docs/books/tutorial/uiswing/components/textarea.html" rel="noreferrer">How to Use Text Areas</a></li>
</ul>

blocks|key|3919615|text|将其放入JScrollPane中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3919616|编辑:这里有一个链接：http://java.sun.com/docs/books/tutorial/uiswing/components/textarea.html|offset|length|3919617|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/docs/books/tutorial/uiswing/components/textarea.html^0|0|B|20|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Put it in a JScrollPane

Edit: Here is a link for you: <a href="http://java.sun.com/docs/books/tutorial/uiswing/components/textarea.html" rel="noreferrer">http://java.sun.com/docs/books/tutorial/uiswing/components/textarea.html</a>

blocks|key|3919668|text|您首先必须像往常一样定义一个JTextArea：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3919669|public+final+JTextArea+mainConsole+=+new+JTextArea("");|code-block|syntax|javascript|3919670|然后在TextArea上放置一个JScrollPane|3919671|JScrollPane+scrollPane+=+new+JScrollPane(mainConsole);
scrollPane.setBounds(10,60,780,500);
scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);|3919672|最后一行表示垂直滚动条将始终在那里。水平方向也有类似的命令。否则，滚动条将只在需要时显示(如果使用_SCROLLBAR_NEVER，则从不显示)。我想这是你的决定，你想怎么使用它。|3919673|如果需要，还可以将wordwrap添加到JTextArea中：Guide+Here|offset|length|3919674|祝好运,|3919675|范数M|3919676|附注:请确保将ScrollPane添加到JPanel，而不是添加JTextArea。|3919677|entityMap|0|LINK|mutability|MUTABLE|url|http://www.swingwiki.org/howto:jtextarea_wordwrap^0|0|0|0|0|0|V|A|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|16|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|18|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|19|8|@]|9|@$O|1A|P|1B|1|1C]]|A|$]]|$1|Q|3|R|5|6|7|1D|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1E|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1F|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|X|$Y|$5|Z|10|11|A|$12|13]]]]

You first have to define a JTextArea as per usual:

<pre><code>public final JTextArea mainConsole = new JTextArea("");
</code></pre>

Then you put a JScrollPane over the TextArea

<pre><code>JScrollPane scrollPane = new JScrollPane(mainConsole);
scrollPane.setBounds(10,60,780,500);
scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
</code></pre>

The last line says that the vertical scrollbar will always be there. There is a similar command for horizontal. Otherwise, the scrollbar will only show up when it is needed (or never, if you use _SCROLLBAR_NEVER). I guess it's your call which way you want to use it.

You can also add wordwrap to the JTextArea if you want to:<a href="http://www.swingwiki.org/howto:jtextarea_wordwrap" rel="noreferrer">Guide Here</a>

Good luck, 
Norm M

P.S. Make sure you add the ScrollPane to the JPanel and not add the JTextArea.

blocks|key|5337479|text|++++++++++++txtarea+=+new+JTextArea();+
++++txtarea.setRows(25);
++++txtarea.setColumns(25);
++++txtarea.setWrapStyleWord(true);
++++JScrollPane+scroll+=+new+JScrollPane+(txtarea);
++++panel2.add(scroll);+//Object+of+Jpanel|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|5337480|在给定的行上自动显示水平和垂直滚动条。|unstyled|5337481|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code> txtarea = new JTextArea(); 
 txtarea.setRows(25);
 txtarea.setColumns(25);
 txtarea.setWrapStyleWord(true);
 JScrollPane scroll = new JScrollPane (txtarea);
 panel2.add(scroll); //Object of Jpanel
</code></pre>

Above given lines automatically shows you both horizontal &amp; vertical Scrollbars..

blocks|key|1809837|text|使用JScrollPan在JScrollBar中添加JTextArea的简单方法|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1809838|import+javax.swing.*;
public+class+ScrollingTextArea+
{
+++++JFrame+f;
+++++JTextArea+ta;
+++++JScrollPane+scrolltxt;

+++++public+ScrollingTextArea()+
+++++{
++++++++//+TODO+Auto-generated+constructor+stub

++++++++f=new+JFrame();
++++++++f.setLayout(null);
++++++++f.setVisible(true);
++++++++f.setSize(500,500);
++++++++ta=new+JTextArea();
++++++++ta.setBounds(5,5,100,200);

++++++++scrolltxt=new+JScrollPane(ta);
++++++++scrolltxt.setBounds(3,3,400,400);

+++++++++f.add(scrolltxt);

+++++}

+++++public+static+void+main(String[]+args)+
+++++{
++++++++new+ScrollingTextArea();
+++++}
}|code-block|syntax|javascript|1809839|entityMap^0|0|C|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Simple Way to add JTextArea in JScrollBar with JScrollPan

<pre><code>import javax.swing.*;
public class ScrollingTextArea 
{
 JFrame f;
 JTextArea ta;
 JScrollPane scrolltxt;

 public ScrollingTextArea() 
 {
 // TODO Auto-generated constructor stub

 f=new JFrame();
 f.setLayout(null);
 f.setVisible(true);
 f.setSize(500,500);
 ta=new JTextArea();
 ta.setBounds(5,5,100,200);

 scrolltxt=new JScrollPane(ta);
 scrolltxt.setBounds(3,3,400,400);

 f.add(scrolltxt);

 }

 public static void main(String[] args) 
 {
 new ScrollingTextArea();
 }
}
</code></pre>

blocks|key|1809793|text|我只想对一个我认为是"coobird“的用户的第一篇文章说声谢谢。我是新来这个stackoverflow.com网站的，但我不敢相信这个社区is...so有多么有用和有帮助，感谢你们所有人发布了一些很好的技巧和建议给其他人。这就是一个社区的全部内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1809794|现在coobird正确地说：|1809795|正如Fredrik在他的回答中提到的，实现这一点的简单方法是将JTextArea放在JScrollPane中。这将允许滚动JTextArea的视图区域。|1809796|我想说的是：|1809797|上述说法是绝对正确的。事实上，我在使用Eclipse插件时一直在努力解决这个问题，因为我不知道什么小部件组合可以帮助我实现这一点。然而，感谢coobird的帖子，我能够解决这个花了我几天的挫折感。|1809798|我还想补充说，尽管我对Java的原理有一个坚实的基础，但我对Java还是比较新的。这里给出的代码片段和建议非常有用。|1809799|我只想添加另一个可能对他人有帮助的小贴士。我注意到Coobird把一些代码放在下面(为了展示如何创建一个可滚动的文本区)。他写道：|1809800|JTextArea+ta+=+new+JTextArea();
JScrollPane+sp+=+new+JScrollPane(ta);+++|code-block|syntax|javascript|1809801|我想说感谢上面来自coobird的代码片段。我没有直接尝试过这样做，但我相信它会工作得很好。然而，对于一些人来说，让你知道当我使用WindowBuilder专业版工具做这件事时，我得到的东西更像下面这样(我认为这只是WindowBuilder实现上面两行所示的一种稍微长一点的、更“间接”的方式)。我的代码有点像这样：|1809802|JScrollPane+scrollPane+=+new+JScrollPane();
scrollPane.setBounds(23,+40,+394,+191);
frame.getContentPane().add(scrollPane);

JTextArea+textArea_1+=+new+JTextArea();
scrollPane.setViewportView(textArea_1);`|1809803|请注意，WindowBuilder基本上创建了一个名为JScrollPane的...then(在前三行代码中)，它通过以下行设置viewportview+:+scrollPane.setViewportView(textArea_1)。因此，本质上，这一行是在我的代码中添加要添加到我的JScrollPane中的textArea_1+(它显然是一个JTextArea)+**这正是coobird所说的)。|1809804|希望这是有帮助的，因为我不想让Coobird专业开发人员感到困惑，认为WindowBuilder的建议是不正确的。|1809805|向所有人致以最美好的祝福，祝编码愉快:)|1809806|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|16|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|17|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|18|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|19|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1A|8|@]|9|@]|A|$]]|$1|N|3|O|5|P|7|1B|8|@]|9|@]|A|$Q|R]]|$1|S|3|T|5|6|7|1C|8|@]|9|@]|A|$]]|$1|U|3|V|5|P|7|1D|8|@]|9|@]|A|$Q|R]]|$1|W|3|X|5|6|7|1E|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1F|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|1G|8|@]|9|@]|A|$]]|$1|12|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|13|$]]

I just wanted to say thank you to the topmost first post by a user whom I think is named "coobird".
I am new to this stackoverflow.com web site, but I cant believe how useful and helpful this community is...so thanks to all of you for posting some great tips and advise to others. Thats what a community is all about.

Now coobird correctly said: 

As Fredrik mentions in his answer, the simple way to achieve this is to place the JTextArea in a JScrollPane. This will allow scrolling of the view area of the JTextArea.

I would like to say: 

The above statement is absolutely true. In fact, I had been struggling with this in Eclipse using the WindowBuilder Pro plugin because I could not figure out what combination of widgets would help me achieve that. However, thanks to the post by coobird, I was able to resolve this frustration which took me days.

I would also like to add that I am relatively new to Java even though I have a solid foundation in the principles. The code snippets and advise you guys give here are tremendously useful.

I just want to add one other tid-bit that may help others. I noticed that Coobird put some code as follows (in order to show how to create a Scrollable text area). He wrote:

<pre><code>JTextArea ta = new JTextArea();
JScrollPane sp = new JScrollPane(ta); 
</code></pre>

I would like to say thanks to the above code snippet from coobird. I have not tried it directly like that but I am sure it would work just fine. However, it may be useful to some to let you know that when I did this using the WindowBuilder Pro tool, I got something more like the following (which I think is just a slightly longer more "indirect" way for WindowBuilder to achieve what you see in the two lines above. My code kinda reads like this:

<pre><code>JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(23, 40, 394, 191);
frame.getContentPane().add(scrollPane);

JTextArea textArea_1 = new JTextArea();
scrollPane.setViewportView(textArea_1);`
</code></pre>

Notice that WindowBuilder basically creates a JScrollPane called scrollpane (in the first three lines of code)...then it sets the viewportview by the following line:
scrollPane.setViewportView(textArea_1). So in essence, this line is adding the textArea_1 in my code (which is obviously a JTextArea) to be added to my JScrollPane **which is precisely what coobird was talking about).

Hope this is helpful because I did not want the WindowBuilder Pro developers to get confused thinking that Coobird's advise was not correct or something.

Best Wishes to all and happy coding :)

blocks|key|5337574|text|简单的add(new+JScrollPane(textArea),+BorderLayout.CENTER);|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5337575|entityMap^0|3|1G|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

问JTextArea中的滚动条
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