Java 如何将 JTextArea 设置为固定大小
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How to set JTextArea to fixed size
提问by Aviv Cohn
I have a JTextArea inside a JPanel. The JPanel is set to the default FlowLayout.
我在 JPanel 中有一个 JTextArea。JPanel 设置为默认 FlowLayout。
I assigned to the JTextArea a size through the constructor: new JTextArea(50,50)
.
我分配到的JTextArea大小通过构造函数:new JTextArea(50,50)
。
However, not only the size I specified is ignored once it's out of a certain range (for example, if I set the size to a value larger than 40*40, the program starts to ignore what I say and instead set the JTextArea to some arbitrary size) - the size also changes as I type. The JTextArea resizes itself if I type inside it more than it can contain.
但是,不仅我指定的大小在超出某个范围时会被忽略(例如,如果我将大小设置为大于 40*40 的值,则程序开始忽略我所说的内容,而是将 JTextArea 设置为某个值任意大小) - 大小也会随着我的输入而改变。如果我在 JTextArea 中键入的内容超出其所能包含的范围,则 JTextArea 会自行调整大小。
I did:
我做了:
textArea.setLineWrap(true);
textArea.setLineWrap(true);
Didn't solve this.
没有解决这个问题。
How can I set a fixed size for the JTextArea?
如何为 JTextArea 设置固定大小?
采纳答案by BaptisteL
If you include it in a JScrollPane that might solve your problem :
如果您将其包含在可能解决您的问题的 JScrollPane 中:
JTextArea textArea = new JTextArea(50, 50);
JScrollPane scrollPane = new JScrollPane( textArea );
You might also have to change you Layout, because by default I think it use the BorderLayout
that expands your components. Or put it in PAGE_START
like this :
您可能还需要更改布局,因为默认情况下我认为它使用BorderLayout
扩展组件的 。或者PAGE_START
像这样输入:
add(new JScrollPane(new JTextArea(50, 50)), BorderLayout.PAGE_START);
回答by agilob
If you want to have fixed size, you have to put it inside a box like JScrollPane:
如果你想有固定的大小,你必须把它放在一个像 JScrollPane 这样的盒子里:
JScrollPane jsp = new JScrollPane(textarea);
if you want the text area to fit maximum number of letters:
如果您希望文本区域适合最大数量的字母:
textarea.setColumns(100);
回答by Arrem
Try using
textArea.setPreferredSize(new Dimension(WIDTH, HEIGHT));
尝试使用
textArea.setPreferredSize(new Dimension(WIDTH, HEIGHT));