Question

启动应用程序时，未选择任何行。但我想表明第一行已被选中。

怎么做？我是否需要在JTable中设置行的颜色？

更新：我试过table.setRowSelectionInterval（0,0）。我知道它应该可以工作，但是有一条错误消息：

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Row index out of range
    at javax.swing.JTable.boundRow(Unknown Source)
    at javax.swing.JTable.setRowSelectionInterval(Unknown Source)
    at cpn_gui.OptPanel.createForm(OptPanel.java:124)
    at cpn_gui.OptPanel.<init>(OptPanel.java:50)
    at cpn_gui.Login$1.actionPerformed(Login.java:62)
    at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
    at java.awt.Component.processMouseEvent(Unknown Source)
    at javax.swing.JComponent.processMouseEvent(Unknown Source)
    at java.awt.Component.processEvent(Unknown Source)
    at java.awt.Container.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$000(Unknown Source)
    at java.awt.EventQueue$1.run(Unknown Source)
    at java.awt.EventQueue$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue$2.run(Unknown Source)
    at java.awt.EventQueue$2.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

Answer 1

您可以拨打setRowSelectionInterval：

table.setRowSelectionInterval(0, 0);

选择第一行。

Answer 2

这是一个老帖子，但我最近遇到过这个

选择特定时间间隔

正如@aleroot已经提到的那样，使用

table.setRowSelectionInterval(index0, index1);

您可以指定应选择的间隔。

在现有选择中添加间隔

您还可以保留当前选择，只需在此处添加其他行

table.getSelectionModel().addSelectionInterval(index0, index1);

这行代码另外选择指定的间隔。如果已经选择了该间隔，则选择其中的一部分并不重要。

Answer 3

您使用JTable的{{3}}并且不要试图弄乱颜色。

JTable上可以直接使用某些选择方法（例如setRowSelectionInterval）。如果您想要访问所有与选择相关的逻辑，available API是开始寻找的地方

以编程方式在JTable中选择一行

3 个答案: