50分求教JList问题,swing高手请进

Question

没必要这么麻烦，只要一个actionlistener就行了。
Object [] object = jlist1.getSelectedValues();
DefaultMListModel mode = (DefaultListModel)jlist1.getModel();
for (int i.....)
 model.removeeme.....(object[i])
model = (DefaultListeModlele)jlist2.getModel();
for (.....
  
)model .addeme....(object[i]
)
lt论坛真掉，不能删除输错的

Answer 1

这是我改过的:import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.DefaultListModel;//由于ListSelectionEvent是swing的事件，不是awt的事件，因此我们必须import 
                            //javax.swing.event.*。public class Work_one implements ListSelectionListener,ActionListener
{
    JList list1 = null;
    JList list2 = null;
    JLabel label = null;
    JButton b1 = null;
    JPanel buttonPanel = null;
    String[] s = {"美国","日本","大陆","英国","法国","意大利","澳洲","韩国"};    public Work_one()
    {
        JFrame f = new JFrame("JList");
        Container contentPane = f.getContentPane();
        contentPane.setLayout(new BorderLayout());
        b1 = new JButton("->");
        b1.addActionListener(this);
        buttonPanel = new JPanel();
        buttonPanel.add(b1);
        label = new JLabel();
        
        DefaultListModel listModel = new DefaultListModel();
        list1 = new JList(listModel);
        for(int i = 0 ; i < s.length ; i++)
        {
          listModel.addElement(s[i]);
        }
        
        list1.setBorder(BorderFactory.createTitledBorder("您最喜欢到哪个国家玩呢？"));
        list1.addListSelectionListener(this);list1.setSize(500,200);        list2 = new JList(new DefaultListModel());
        list2.setBorder(BorderFactory.createTitledBorder("222"));
        list2.addListSelectionListener(this);        contentPane.add(buttonPanel,BorderLayout.CENTER);
        contentPane.add(label,BorderLayout.NORTH);
        contentPane.add(new JScrollPane(list1),BorderLayout.WEST);
        contentPane.add(new JScrollPane(list2),BorderLayout.EAST);
        f.pack();
        f.show();
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                    System.exit(0);
            }
        });
    }    public static void main(String args[])
    {
        new Work_one();
    }    public void valueChanged(ListSelectionEvent e)
    {
        int tmp = 0;
        String stmp = "您目前选取：";
        int[] index = list1.getSelectedIndices();//利用JList类所提供的getSelectedIndices()方法可得到用户所选取的所有 
        for(int i=0; i < index.length ; i++)//index值，这些index值由一个int array返回.
        {
            tmp = index[i];
            stmp = stmp+s[tmp]+"  ";
        }
        label.setText(stmp);
    }
        public void actionPerformed(ActionEvent e)
        {
                if(e.getSource() == b1)
                        if(list1.getSelectedIndices().length > 0)
                        {
                                int[] index = list1.getSelectedIndices();
                                DefaultListModel model = (DefaultListModel) list2.getModel();    
                                DefaultListModel model1 = (DefaultListModel) list1.getModel();
                                String[] delete = new String[index.length];                                for(int i = 0 ; i < index.length ; i++)
                                {
                                        String temp = model1.elementAt(index[i]).toString();
                                        model.addElement(temp);
                                        delete[i] = temp;
                                }
                                for(int i = 0 ; i < index.length ; i++)
                                {
                                  model1.removeElement(delete[i]);
                                }
                                list2.setModel(model);
                                list1.setModel(model1);
                        }
        }
}

Answer 2

我也作了一个，大家提提建议阿：
源码如下：
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.WindowConstants;/*
 * Created on 2004-7-19
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 *//**
 * @author Harper  [email protected]   
 * 
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class listForAll { public static void main(String[] args) {
listform f=new listform("CountryChoose");
f.setSize(500,400);
f.setLocation(200,200);
f.setVisible(true);
f.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);

f.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});

}
}import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
/*
 * Created on 2004-7-19
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 *//**
 * @author Harper   [email protected]
 *  这里只考虑了向右添加的情况；向左添加可以类推；
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */public class listform extends JFrame implements ListSelectionListener,ActionListener 
{
JList list_one,list_two;
JButton button=new JButton("->");
JLabel label1,label2;
ArrayList one=new ArrayList();
ArrayList two=new ArrayList();

JScrollPane scroll_one;
JScrollPane scroll_two;

String tmp;
Object choose[];

Container c=getContentPane();


public listform(String title)
{
super(title);

c.setLayout(new FlowLayout());

one.add("-----请选择-----");
one.add("中国");
one.add("美国");
one.add("日本");
one.add("韩国");
one.add("台湾");
one.add("新加坡");
one.add("香港");
one.add("马来西亚");
one.add("法国");
one.add("德国");
one.add("英国");
one.add("瑞士");
one.add("瑞典");

two.add("-----已选择-----");   

c.add(new JLabel(""));
c.add(new JLabel(""));


list_one=new JList(one.toArray());

list_two=new JList(two.toArray());
list_one.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);//只能单选

label1= new JLabel("你想去哪?请选择!");
label2=new JLabel("你选择了：");
scroll_one=new JScrollPane(list_one);
scroll_one.setColumnHeaderView(label1);


scroll_two=new JScrollPane(list_two);
scroll_two.setColumnHeaderView(label2); 


c.add(scroll_one);
c.add(button);
c.add(scroll_two);

button.addActionListener(this);

list_one.addListSelectionListener(this);


//可以添加list_two列表事件 ，用于返回不想选中的选项
} /* (non-Javadoc)
 * @see javax.swing.event.ListSelectionListener#valueChanged(javax.swing.event.ListSelectionEvent)
 */
public void valueChanged(ListSelectionEvent arg0) {
// TODO Auto-generated method stub
choose=list_one.getSelectedValues();
for(int i=0;i<choose.length;i++)
{
one.remove(choose[i]);
} } /* (non-Javadoc)
 * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
 */
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
for(int i=0;i<choose.length;i++)
{
two.add(choose[i]);
}
renew();
}

public void renew()
{
list_one.removeAll();
list_two.removeAll();
list_one.setListData(one.toArray());
list_two.setListData(two.toArray());
}}