我有时会得到这个例外.我真的不知道哪里有问题,我使用了abstracttablemodel的实现.我无法找到发生异常的精确位置,因为当我使用调试器并逐步运行异常时不会发生.
Exception occurred during event dispatching:
java.lang.Arrayindexoutofboundsexception: 2 >= 2
at java.util.Vector.elementAt(Vector.java:427)
at javax.swing.table.DefaultTableColumnModel.getColumn(DefaultTableColumnModel.java:277)
at javax.swing.plaf.basic.BasicTableuI.paintGrid(BasicTableuI.java:1931)
at javax.swing.plaf.basic.BasicTableuI.paint(BasicTableuI.java:1767)
at com.alee.laf.table.WebTableuI.paint(WebTableuI.java:52)
at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143)
at javax.swing.JComponent.paintComponent(JComponent.java:752)
at javax.swing.JComponent.paint(JComponent.java:1029)
at javax.swing.JComponent.paintChildren(JComponent.java:862)
at javax.swing.JComponent.paint(JComponent.java:1038)
at javax.swing.JViewport.paint(JViewport.java:747)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124)
at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:278)
at javax.swing.RepaintManager.paint(RepaintManager.java:1225)
at javax.swing.JComponent._paintImmediately(JComponent.java:5072)
at javax.swing.JComponent.paintImmediately(JComponent.java:4882)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:786)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:694)
at javax.swing.RepaintManager.access$700(RepaintManager.java:41)
at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1636)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:641)
at java.awt.EventQueue.access$000(EventQueue.java:84)
at java.awt.EventQueue$1.run(EventQueue.java:602)
at java.awt.EventQueue$1.run(EventQueue.java:600)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:611)
at java.awt.EventdispatchThread.pumpOneEventForFilters(EventdispatchThread.java:269)
at java.awt.EventdispatchThread.pumpEventsForFilter(EventdispatchThread.java:184)
at java.awt.EventdispatchThread.pumpEventsForFilter(EventdispatchThread.java:178)
at java.awt.Dialog$1.run(Dialog.java:1046)
at java.awt.Dialog$3.run(Dialog.java:1098)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Dialog.show(Dialog.java:1096)
at java.awt.Component.show(Component.java:1584)
at java.awt.Component.setVisible(Component.java:1536)
at java.awt.Window.setVisible(Window.java:842)
at java.awt.Dialog.setVisible(Dialog.java:986)
at ui.MainFrame.queryButtonActionPerformed(MainFrame.java:936)
at ui.MainFrame.access$700(MainFrame.java:89)
at ui.MainFrame$9.actionPerformed(MainFrame.java:538)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setpressed(DefaultButtonModel.java:242)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
at java.awt.Component.processMouseEvent(Component.java:6288)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6053)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4651)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4481)
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:4481)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:643)
at java.awt.EventQueue.access$000(EventQueue.java:84)
at java.awt.EventQueue$1.run(EventQueue.java:602)
at java.awt.EventQueue$1.run(EventQueue.java:600)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$2.run(EventQueue.java:616)
at java.awt.EventQueue$2.run(EventQueue.java:614)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:613)
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)
我的桌子型号：
/*
* To change this template,choose Tools | Templates
* and open the template in the editor.
*/
package util;
import entity3.Document;
import entity3.Msg;
import entity3.Senderreceiver;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import javax.swing.table.AbstractTableModel;
/**
*
* @author work
*/
public class IncomingMailTableModel extends AbstractTableModel{
public String[] getColumnNames() {
return columnNames;
}
public void setColumnNames(String[] columnNames) {
this.columnNames = columnNames;
}
private String[] columnNames = {"Дата","Тема","Відправник","Статус"};
private List<Document> documents;
public IncomingMailTableModel(List<Document> documents) {
this.documents = documents;
}
@Override
public int getRowCount() {
return documents.size();
}
@Override
public int getColumnCount() {
return columnNames.length;
}
@Override
public String getColumnName(int col) {
return columnNames[col];
}
public Document getobjectAtRow(int row) {
return documents.get(row);
}
@Override
public Class getColumnClass(int column) {
switch (column) {
case 0:
return String.class;
case 1:
return String.class;
case 2:
return String.class;
case 3:
return String.class;
}
return null;
}
@Override
public String getValueAt(int row,int column) {
String toReturn = "";
Document document = documents.get(row);
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Msg msg =document.getMsg();
ArrayList<Senderreceiver> senderReceivers = new ArrayList<Senderreceiver>(msg.getSenderreceivers());
//ArrayList<Document> docs = new ArrayList<Document>(document.getMsg().getDocuments());
switch (column) {
case 0:
if (document.getMsg().getReceivingDate() != null)
toReturn = format.format(document.getMsg().getReceivingDate());
break;
case 1:
toReturn = document.getTitle();
break;
case 2:
for (Object o : senderReceivers) {
Senderreceiver senderReceiver = (Senderreceiver) o;
if (senderReceiver.getRole()==0) {
toReturn = senderReceiver.getorganization().getShortName();
}
}
break;
case 3:
if (document.getMsg().getIsRead()!=null)
if(document.getMsg().getIsRead()) toReturn = "Прочитано";
else toReturn="Непрочитано";
break;
}
return toReturn;
}
}
解决方法
如果要从Event dispatch线程以外的线程修改TableModel(或TableModel“所在的数据结构”),则可能会发生这种情况.
此错误的另一个常见原因是混合了视图和模型索引.例如,如果使用getSelectedRow()从JTable检索选定的行,则返回的值是基于视图的索引.如果您希望索引到相应的TableModel,则需要使用convertRowIndexToModel转换此值.
对于后一种情况,您可以尝试通过在不同列上对表进行排序,然后单击各行(特别是第一个和最后一个),或者在UI中执行“处理”该行所需的任何操作来复制此异常.