java 为 JTable 创建多行标题
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/2343391/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Creating multi-line header for JTable
提问by miso
I use JTable GUI component with NetBeans.
我在 NetBeans 中使用 JTable GUI 组件。
I want to create multi-line headers
I am able to this, when I create custom renderer for table headers
BUT I don't want to, because I like default one (I use it everywhere else in program).
So the problem is : How to make header heigher?
我想创建多行标题
当我为表头创建自定义渲染器时，我能够做到这一点
但我不想，因为我喜欢默认的（我在程序中的其他任何地方都使用它）。
所以问题是：如何使标题更高？
My code :
我的代码：
String headers[] = new String[3];
headers[0] = "Header1";
headers[1] = "Header2";
headers[2] = "<html><center>Long<br>Centered</br></center></html>";
DefaultTableModel dtm = new DefaultTableModel();
dtm.setColumnIdentifiers(headers);
dtm.setRowCount(5);
jTable1.setModel(dtm);
jTable1.getTableHeader().setPreferredSize(
new Dimension(jTable1.getColumnModel().getTotalColumnWidth(),32));
回答by Peter Lang
Try the following:
请尝试以下操作：
table.getTableHeader().setPreferredSize(
new Dimension(table.getColumnModel().getTotalColumnWidth(), 32));
This will change the size of the header:
这将改变标题的大小：
To center the text, you can use the <center>-tag:
要使文本居中，您可以使用<center>-tag：
headers[2] = "<html><center>Long Centered<br>Header";
EDIT:
编辑：
The alignment is set by your LookAndFeel. WindowsTableHeaderUIfor example explicitly calls
对齐方式由您的 LookAndFeel 设置。WindowsTableHeaderUI例如显式调用
setHorizontalAlignment(LEADING);
The easiest way to solve this is:
解决这个问题的最简单方法是：
(JLabel)table.getTableHeader().getDefaultRenderer())
.setHorizontalAlignment(SwingConstants.CENTER);
Note that this change is lost when you change your LookAndFeel afterwards.
请注意，当您之后更改 LookAndFeel 时，此更改将丢失。
回答by RtsGeneral
hi guys i tried this and it works:
嗨，伙计们，我试过这个，它有效：
DefaultTableCellRenderer r;
String headers[] = new String[3];
headers[0] = "Category";
headers[1] = "Item";
headers[2] = "<html><center>Packaging<br>unit</center></br></html>";
DefaultTableModel dtm = new DefaultTableModel();
table.setModel(dtm);
r = (DefaultTableCellRenderer)table.getTableHeader().getDefaultRenderer();
r.setHorizontalAlignment(JLabel.CENTER);
dtm.setColumnIdentifiers(headers);
table.getTableHeader().setPreferredSize(new Dimension(table.getColumnModel().getTotalColumnWidth(),32));
