我有一个列（7），有一个按钮，操作只是删除行。我也有鼠标点击事件到表。我想当用户点击删除按钮时，它会删除行和其他一些东西选定的单元格值。我的删除操作工作正常，但是当我单击按钮时会引发异常，但是当我单击同一行中的另一个单元格时，它会给我正确的行和列数据。我不明白实际的问题。按钮是否不会像同一行中的其他单元格一样被视为单击的单元格...？这是我的主要构造函数
public SellWindow() { //dafault constructor
String title[]={"Qty","Code","Name","vat","Discount","Unit Value","Line Total","Delete"};
table.setColumnIdentifiers(title);
this.entry.setModel(table); //entry is the jtable
//entry.getColumn("Delete");
ButtonColumn buttonColumn = new ButtonColumn(entry, delete,7);
buttonColumn.setMnemonic(KeyEvent.VK_D);
}
这是我的按钮类
public ButtonColumn(JTable table, Action action, int column)
{
this.table = table;
this.action = action;
renderButton = new JButton();
editButton = new JButton();
editButton.setFocusPainted( false );
editButton.addActionListener( this );
originalBorder = editButton.getBorder();
setFocusBorder( new LineBorder(Color.BLUE) );
TableColumnModel columnModel = table.getColumnModel();
columnModel.getColumn(column).setCellRenderer( this );
columnModel.getColumn(column).setCellEditor( this );
table.addMouseListener( this );
}
这是我的删除操作代码
Action delete = new AbstractAction(){
public void actionPerformed(ActionEvent e){
JTable table = (JTable)e.getSource();
int modelRow = Integer.valueOf( e.getActionCommand() );
((DefaultTableModel)table.getModel()).removeRow(modelRow);
getIndexRow(); // i add this here just to check but same exception
}
};
这是我点击表格的代码
private void entryMouseClicked(java.awt.event.MouseEvent evt) {
getIndexRow();
}
这是我获取表格数据的代码
private void getIndexRow(){ //this works fine for other cells but not for the cell holding the delete button
int row=entry.getSelectedRow();
Object o=entry.getModel().getValueAt(row,6);
System.out.println(row);
System.out.println((String)o);
}
这是插入行的代码（通过单击输入按钮的产品信息）
private void addItemActionPerformed(java.awt.event.ActionEvent evt) {
// this is the action performed by pressing the add item button
result=p.getInfo(this.addItemField.getText());
for(String s:result){
data[i]=s;
i+=1;
}
data[0]="1";
quantity=Integer.parseInt(data[0]);
price=Integer.parseInt(data[5]);
int tPrice=price*quantity;
total=tPrice+total;
ItemTotal +=1;
Itotal.setText(Integer.toString(ItemTotal));
showTotal.setText(Integer.toString(total));
data[6]=Integer.toString(tPrice);
table.addRow(data);
this.addItemField.grabFocus();
addItemField.setText("");
}
例外
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.Vector.elementData(Vector.java:730)
at java.util.Vector.elementAt(Vector.java:473)
at javax.swing.table.DefaultTableModel.getValueAt(DefaultTableModel.java:649)
at SellWindow.getIndexRow(SellWindow.java:581)
at SellWindow.access$000(SellWindow.java:26)
at SellWindow$2.actionPerformed(SellWindow.java:49)
at ButtonColumn.actionPerformed(ButtonColumn.java:190)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at javax.swing.plaf.basic.BasicTableUI$Handler.repostEvent(BasicTableUI.java:948)
at javax.swing.plaf.basic.BasicTableUI$Handler.mouseReleased(BasicTableUI.java:1164)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:290)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703)
at java.awt.EventQueue.access$000(EventQueue.java:102)
at java.awt.EventQueue$3.run(EventQueue.java:662)
at java.awt.EventQueue$3.run(EventQueue.java:660)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:676)
at java.awt.EventQueue$4.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:673)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)