以编程方式在JTable中选择一行 [英] Programmatically select a row in JTable

问题描述

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。

When the application is started, none of the rows is selected. But I would like to show that the first row is already selected.

如何做到这一点？我是否需要在 JTable 中设置行的颜色？

How to do this? Do I need to set the color of a row in JTable?

更新：
我尝试了table.setRowSelectionInterval（0,0）。我知道它应该工作，但是有一条错误消息：

Update: I tried table.setRowSelectionInterval(0,0). I know it should work, but there is an error message:

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)

推荐答案

你可以调用 setRowSelectionInterval ：

table.setRowSelectionInterval(0, 0);

选择第一行。

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