Java-JTabbedPane-添加新面板时出现ArrayIndexOutOfBoundsException

Question

我在使用JTabbedPane并向其添加新选项卡时遇到了一个奇怪的问题。

public void addTab(String title, AbstractTab tab) {
    int i = tabPanel.getTabCount();
    System.out.println("Tab count:" + i);
    tab.validate();
    tabPanel.insertTab(title, null, tab, title, i);
    tabPanel.validate();
    tabPanel.setSelectedIndex(i);
}

运行此代码会导致以下异常：

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.Vector.elementAt(Unknown Source)
at javax.swing.JTabbedPane.getTitleAt(Unknown Source)
at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.updateHtmlViews(Unknown Source)
at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.componentAdded(Unknown Source)
at java.awt.Container.processContainerEvent(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.Container.addImpl(Unknown Source)
at javax.swing.JTabbedPane.insertTab(Unknown Source)
at View.Swing.Global.**EditorPanel.addTab(EditorPanel.java:383)**
at View.Swing.Developer.DeveloperContentPanel.showNote(DeveloperContentPanel.java:176)
at View.Swing.Developer.DeveloperTreeViewer.clickedTreeElement(DeveloperTreeViewer.java:62)
at View.Swing.Global.TreeNavigation.mouseClicked(TreeNavigation.java:556)
at java.awt.AWTEventMulticaster.mouseClicked(Unknown Source)
...

System.out.println(..);打印

Tab count 1 

奇怪的是，这个方法只工作一次，另一次它抛出这个异常。添加的选项卡是类AbstractTab的实例，包含JTextFields、MetaphaseEditor、滚动条、JLabels和JTextArea以及一些图片（ImageIcon）。

有人知道这个问题的解决办法吗？

Answer 1

，也许您不止一次使用一个组件？

在文档中澄清，JTabbedPane中的2个选项卡都不能具有分配给它们的相同组件。。原因java.lang.ArrayIndexOutOfBoundsException：1>0