想做一个记录的程序，将文本框中输入的内容显示在列表中，现在能够添加，但是在删除时，数据模型中的数据删除成功，但是在列表视图中仍然存在，仅仅是有显示，但点击后没反应。
public class Address {
protected String name;
protected String email;
public Address(String _name,String _email){
name=_name;
email=_email;
}
public String toString(){
return name;
}
}
package higher;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.border.TitledBorder;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class EmailListing extends JFrame implements ActionListener,
ListSelectionListener {
private JButton add=new JButton("Add");
private JButton del=new JButton("Delete");
private DefaultListModel data =new DefaultListModel();
private JList list=new JList(data);//数据模型放在列表中
private JTextField name= new JTextField();
private JTextField email= new JTextField();
public EmailListing(){
super("Email List");
JPanel buttons=new JPanel(new FlowLayout());
buttons.add(add); add.addActionListener(this);
buttons.add(del); del.addActionListener(this);
JPanel input =new JPanel(new GridLayout(2,2));
input.add(new JLabel("Name:")); input.add(name);
input.add(new JLabel("Email:")); input.add(email);
input.setBorder(new TitledBorder("address"));
JScrollPane scrollList =new JScrollPane(list);//将列表放在带有滚动条的面板中
scrollList.setBorder(new TitledBorder("List"));
setLayout(new BorderLayout());
getContentPane().add("North", input);
getContentPane().add("South", buttons);
getContentPane().add("Center", scrollList);
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
list.addListSelectionListener(this);
email.addActionListener(this);
validate();pack();setVisible(true);
}
public void delete(){
if(list.getSelectedIndex()>=0){
data.remove(list.getSelectedIndex());
name.setText(" ");
email.setText(" ");
}
}
public void add(){
if(!name.equals("")){
data.addElement(new Address(name.getText(),email.getText()));
name.setText(" ");
email.setText(" ");
name.requestFocus();
}
}
@Override
public void valueChanged(ListSelectionEvent arg0) {
// TODO Auto-generated method stub
if(!arg0.getValueIsAdjusting()){
Address address = (Address)data.get(list.getSelectedIndex());
name.setText(address.name);
email.setText(address.email);
}
}
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
if(arg0.getSource()==del){
delete();
}
if(arg0.getSource()==add||arg0.getSource()==email){
add();
}
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
EmailListing el =new EmailListing();
}
}
以下是抛出的异常
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.Vector.elementData(Unknown Source)
at java.util.Vector.elementAt(Unknown Source)
at javax.swing.DefaultListModel.get(Unknown Source)
at higher.EmailListing.valueChanged(EmailListing.java:81)
at javax.swing.JList.fireSelectionValueChanged(Unknown Source)
at javax.swing.JList$ListSelectionHandler.valueChanged(Unknown Source)
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source)
at javax.swing.DefaultListSelectionModel.removeIndexInterval(Unknown Source)
at javax.swing.plaf.basic.BasicListUI$Handler.intervalRemoved(Unknown Source)
at javax.swing.AbstractListModel.fireIntervalRemoved(Unknown Source)
at javax.swing.DefaultListModel.remove(Unknown Source)
at higher.EmailListing.delete(EmailListing.java:60)
at higher.EmailListing.actionPerformed(EmailListing.java:91)
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$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$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)
