Question

我有一个JTable，里面有一些信息。现在我想从中删除一个指定行，但它有异常。

我在下面写了代码：

jtable table = new jtable(model);

 model.setDataVector(str2, str1);

model.fireTableRowsDeleted(row, row);
     model.removeRow(row);


//str2,str1 are verctor

什么是问题？

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 0 >= 0
    at java.util.Vector.removeElementAt(Vector.java:511)
    at javax.swing.table.DefaultTableModel.removeRow(DefaultTableModel.java:446)
    at project1.SportMan.jMenuItem1ActionPerformed(SportMan.java:481)
    at project1.SportMan.access$1000(SportMan.java:29)
    at project1.SportMan$6.actionPerformed(SportMan.java:350)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
    at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
    at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809)
    at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:850)
    at java.awt.Component.processMouseEvent(Component.java:6267)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
    at java.awt.Component.processEvent(Component.java:6032)
    at java.awt.Container.processEvent(Container.java:2041)
    at java.awt.Component.dispatchEventImpl(Component.java:4630)
    at java.awt.Container.dispatchEventImpl(Container.java:2099)
    at java.awt.Component.dispatchEvent(Component.java:4460)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
    at java.awt.Container.dispatchEventImpl(Container.java:2085)
    at java.awt.Window.dispatchEventImpl(Window.java:2478)
    at java.awt.Component.dispatchEvent(Component.java:4460)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Answer 1

java.lang.ArrayIndexOutOfBoundsException: 0 >= 0是一个非常明确的指标，表格已经是空的。

Answer 2

除了我的评论：model.fireSomething 不是 soSomething的手段（并不意味着在模型之外使用）。相反，调用model.removeRow（row） - 如果具体实现支持，则为f.i. DefaultTableModel - 一切都会起作用（前提是该行是有效的行索引）。

附录：Jim完全正确 - stackstrace显示模型为空

如何从jtable中删除指定行？

2 个答案: