Question

我有一个带有字符串数组的JList。基本上它显示餐馆菜单。在JList旁边我有另一个空的JList。每当用户双击第一个JList（显示菜单的位置）中的字符串时，我希望它显示在旁边的下一个JList上。

我该怎么做？

Answer 1

你可以尝试

final JList list = new JList(dataModel);
MouseListener mouseListener = new MouseAdapter() {
    public void mouseClicked(MouseEvent e) {
        if (e.getClickCount() == 2) {


           String selectedItem = (String) list.getSelectedValue();
           // add selectedItem to your second list.
           DefaultListModel model = (DefaultListModel) list2.getModel();
           if(model == null)
           {
                 model = new DefaultListModel();
                 list2.setModel(model);
           }
           model.addElement(selectedItem);

         }
    }
};
list.addMouseListener(mouseListener);

Answer 2

您可能还想通过添加KeyListener按下Enter键来执行此操作：

07.08.2015 16:11:36   AMgr: Agent ('TestLDAP' in 'test/tel_sez3.nsf') error message: org.apache.directory.ldap.client.api.exception.InvalidConnectionException: Cannot connect on the server, the connection is null
07.08.2015 16:11:36   AMgr: Agent ('TestLDAP' in 'test/tel_sez3.nsf') error message:    at org.apache.directory.ldap.client.api.LdapNetworkConnection.checkSession(LdapNetworkConnection.java:270)
07.08.2015 16:11:36   AMgr: Agent ('TestLDAP' in 'test/tel_sez3.nsf') error message:    at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindAsync(LdapNetworkConnection.java:1274)
07.08.2015 16:11:36   AMgr: Agent ('TestLDAP' in 'test/tel_sez3.nsf') error message:    at org.apache.directory.ldap.client.api.LdapNetworkConnection.bind(LdapNetworkConnection.java:1185)
07.08.2015 16:11:36   AMgr: Agent ('TestLDAP' in 'test/tel_sez3.nsf') error message:    at org.apache.directory.ldap.client.api.LdapNetworkConnection.bind(LdapNetworkConnection.java:1043)
07.08.2015 16:11:36   AMgr: Agent ('TestLDAP' in 'test/tel_sez3.nsf') error message:    at JavaAgent.NotesMain(Unknown Source)
07.08.2015 16:11:36   AMgr: Agent ('TestLDAP' in 'test/tel_sez3.nsf') error message:    at lotus.domino.AgentBase.runNotes(Unknown Source)
07.08.2015 16:11:36   AMgr: Agent ('TestLDAP' in 'test/tel_sez3.nsf') error message:    at lotus.domino.NotesThread.run(Unknown Source)

我知道这不是双击，但有些人想要按照我想要的方式使用Enter按钮。

Answer 3

public void addActionListener(final ActionListener al) {

    jList.addKeyListener(new KeyAdapter() {
        public void keyPressed(KeyEvent e) {
            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                al.actionPerformed(new ActionEvent(e.getSource(), e.getID(), "ENTER"));
            }
        }
    });

    jList().addMouseListener(new MouseAdapter() {
        public void mouseClicked(MouseEvent e) {
            if (e.getClickCount() == 2) {
                al.actionPerformed(new ActionEvent(e.getSource(), e.getID(), "ENTER"));
            }
        }
    });

}

Answer 4

我已经在你的代码中已经完成了另一个问题吗？ [link] I want to add an action listener from one JList to another JList and how can a JList appear with out any text inside?

唯一的想法是你必须把它放到@Bala R的if语句中检查点击次数：

if（e.getClickCount（）== 2）{

//你的代码

}

实际上你最好使用addElement（selectedItem）;方法，如在@Bala R的代码中而不是 add（orderList.getModel（）。getSize（），selectedItem）;在我的代码中。两者都将项添加到最后，但addElement看起来更好，您不需要检索模型的大小。

Oi，Boro。

将ActionListener添加到JList

4 个答案: