Java 在 JTable 列中设置右对齐
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Set Right Alignment in JTable Column
提问by Arivu2020
I am creating an application for a billing facility. I want the amount column to display with right alignment. How do I set the right alignment for a JTable column?
我正在为计费工具创建应用程序。我希望金额列以右对齐方式显示。如何为 JTable 列设置正确的对齐方式？
回答by trashgod
See Concepts: Editors and Renderers, noting "Number— rendered by a right-aligned label." Just have your TableModelreturn the correct class. As a concrete example, note that Integeris a Number, while examining the implementation of getColumnClass()in this example. In this related example, the zeroth colIndexreturns Object.class, which is "rendered by a label that displays the object's string value." By default, the label is left-aligned.
请参阅概念：编辑器和渲染器，注意“ Number— 由右对齐标签渲染”。只需让您TableModel返回正确的课程即可。作为一个具体的例子，在检查这个例子中的实现时，请注意它Integer是。在这个相关示例中，第零个返回，它“由显示对象字符串值的标签呈现”。默认情况下，标签左对齐。NumbergetColumnClass()colIndexObject.class
switch (colIndex) {
case 0: return Object.class;
…
}
In contrast, Integer.classis "rendered by a right-aligned label."
相比之下，Integer.class是“由右对齐标签呈现”。
switch (colIndex) {
case 0: return Integer.class;
…
}
These are examples of using Class Literals as Runtime-Type Tokens, discussed herein the context of JTable.
这些是使用的示例类常量作为运行时类型令牌，讨论在这里的背景下JTable。
回答by YoK
You will have to get DefaultTableCellRenderer for table cells and call setHorizontalAlignment(alignment).
您必须为表格单元格获取 DefaultTableCellRenderer 并调用 setHorizontalAlignment(alignment)。
Example can be found on links:
可以在链接上找到示例：
http://www.techrepublic.com/article/how-to-justify-data-in-a-jtable-cell/5032692/
http://www.techrepublic.com/article/how-to-justify-data-in-a-jtable-cell/5032692/
http://www.coderanch.com/t/337549/GUI/java/align-data-columns-JTable
http://www.coderanch.com/t/337549/GUI/java/align-data-columns-JTable
回答by Emil
Try this:
尝试这个：
JTable tbl = new JTable(3,3) {
DefaultTableCellRenderer renderRight = new DefaultTableCellRenderer();
{ // initializer block
renderRight.setHorizontalAlignment(SwingConstants.RIGHT);
}
@Override
public TableCellRenderer getCellRenderer (int arg0, int arg1) {
return renderRight;
}
};
回答by sathya
DefaultTableCellRenderer rightRenderer = new DefaultTableCellRenderer();
rightRenderer.setHorizontalAlignment(JLabel.RIGHT);
table.getColumnModel().getColumn(4).setCellRenderer(rightRenderer);
