我有一个JList问题。我有这个JList的监听器(鼠标和键盘)。 我想双击列表中的某个选项(或按Enter键)后,JFrame关闭。我无法找到任何地方。你能帮我解决吗?如何关闭我的JList的jFrame?
下面是我使用的类(从StackOverflow的拍摄):
import javax.swing.*;
import java.awt.event.*;
import java.util.Vector;
public class ActionJList extends JList {
ActionListener al;
boolean close=false;
public ActionJList(String[] it){
super(it);
addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent me) {
if (al == null) return;
Object ob[] = getSelectedValues();
if (ob.length > 1) return;
if (me.getClickCount() == 2) {
System.out.println("Sending ACTION_PERFORMED to ActionListener");
al.actionPerformed(new ActionEvent(this,
ActionEvent.ACTION_PERFORMED,
ob[0].toString()));
me.consume();
close=true;
}
}
});
addKeyListener(new KeyAdapter() {
public void keyReleased(KeyEvent ke) {
if (al == null) return;
Object ob[] = getSelectedValues();
if (ob.length > 1) return;
if (ke.getKeyCode() == KeyEvent.VK_ENTER) {
System.out.println("Sending ACTION_PERFORMED to ActionListener");
al.actionPerformed(new ActionEvent(this,
ActionEvent.ACTION_PERFORMED,
ob[0].toString()));
ke.consume();
}
}
});
this.setSelectedIndex(0);
}
public ActionJList(Vector it){
super(it);
addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent me) {
if (al == null) return;
Object ob[] = getSelectedValues();
if (ob.length > 1) return;
if (me.getClickCount() == 2) {
System.out.println("Sending ACTION_PERFORMED to ActionListener");
al.actionPerformed(new ActionEvent(this,
ActionEvent.ACTION_PERFORMED,
ob[0].toString()));
me.consume();
}
}
});
addKeyListener(new KeyAdapter() {
public void keyReleased(KeyEvent ke) {
if (al == null) return;
Object ob[] = getSelectedValues();
if (ob.length > 1) return;
if (ke.getKeyCode() == KeyEvent.VK_ENTER) {
System.out.println("Sending ACTION_PERFORMED to ActionListener");
al.actionPerformed(new ActionEvent(this,
ActionEvent.ACTION_PERFORMED,
ob[0].toString()));
ke.consume();
}
}
});
this.setSelectedIndex(0);
}
public void addActionListener(ActionListener al){
this.al = al;
}
public boolean getClose(){return close;}
}
当你在SO上发现时,代码是否严重缩进? –