java GUI图形界面小问题 先答对拿分 想做一个java的 计事本 一样的窗体 现在问题在于 我如何获得菜单栏上点击的事件以及处理的方法 贴个代码出来谢谢 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 Swing中的事件问题.....这个在IDE中直接双击就自动产生代码了... 就是JMenu的事件吧,有个现成的package test;import java.awt.BorderLayout;import java.awt.Dimension;import java.awt.FlowLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JComboBox;import javax.swing.JDialog;import javax.swing.JFrame;import javax.swing.JMenu;import javax.swing.JMenuBar;import javax.swing.JMenuItem;import javax.swing.JPanel;import javax.swing.JTextField;public class TestJFrame extends JFrame implements ActionListener { private static final long serialVersionUID = -362233428598274611L; private JMenuItem mi = null; public static void main(String[] args) { new TestJFrame(); } public TestJFrame() { init(); } private void init() { JMenuBar menuBar = new JMenuBar(); JMenu menu = new JMenu("Menu"); menuBar.add(menu); JMenu menu2 = new JMenu("Menu2"); menuBar.add(menu2); mi = new JMenuItem("test"); mi.addActionListener(this); menu.add(mi); this.setJMenuBar(menuBar); this.getContentPane().setLayout(new BorderLayout()); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setSize(new Dimension(300, 300)); this.setVisible(true); } public void actionPerformed(ActionEvent e) { if (e.getSource().equals(mi)) { new MyDialog(); } }}class MyDialog extends JDialog { private static final long serialVersionUID = 4463681153478016484L; public MyDialog() { super(); this.setModal(true); init(); } private void init() { this.getContentPane().setLayout(new BorderLayout()); this.getContentPane().add(getCenterPanel(), BorderLayout.CENTER); this.setSize(new Dimension(200, 200)); this.setVisible(true); } private JPanel getCenterPanel() { JPanel panel = new JPanel(); panel.setLayout(new FlowLayout(FlowLayout.CENTER)); JTextField field1 = new JTextField(5); JTextField field2 = new JTextField(5); JComboBox cb = new JComboBox(); cb.addItem("cb1"); cb.addItem("cb2"); cb.addItem("cb3"); panel.add(field1); panel.add(field2); panel.add(cb); return panel; }} found talbe xx ,又说 表或视图不存在 关于hibernate中添加一个对象问题 在线等,xfire调用webservice的超时时间问题 JUnit:测试的问题 webwork checkbox 从aciont里面动态获取从数据库里面存储的值, struts中如何深拷贝一个form呀? 苍天哪,大地呢.conn.close()到底要放到哪里呀! java继承 大家都用NoSQL数据库吗?NoSQL哪个占有率比较高? 项目中链接mysql的问题,该怎么解决 A@B@C@D@E 如何避免滥用orm框架
package test;import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JTextField;public class TestJFrame extends JFrame implements ActionListener { private static final long serialVersionUID = -362233428598274611L; private JMenuItem mi = null; public static void main(String[] args) {
new TestJFrame();
} public TestJFrame() {
init();
} private void init() {
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("Menu");
menuBar.add(menu);
JMenu menu2 = new JMenu("Menu2");
menuBar.add(menu2);
mi = new JMenuItem("test");
mi.addActionListener(this);
menu.add(mi);
this.setJMenuBar(menuBar);
this.getContentPane().setLayout(new BorderLayout());
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setSize(new Dimension(300, 300));
this.setVisible(true);
} public void actionPerformed(ActionEvent e) {
if (e.getSource().equals(mi)) {
new MyDialog();
}
}}class MyDialog extends JDialog { private static final long serialVersionUID = 4463681153478016484L; public MyDialog() {
super();
this.setModal(true);
init();
} private void init() {
this.getContentPane().setLayout(new BorderLayout());
this.getContentPane().add(getCenterPanel(), BorderLayout.CENTER);
this.setSize(new Dimension(200, 200));
this.setVisible(true);
} private JPanel getCenterPanel() {
JPanel panel = new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.CENTER));
JTextField field1 = new JTextField(5);
JTextField field2 = new JTextField(5);
JComboBox cb = new JComboBox();
cb.addItem("cb1");
cb.addItem("cb2");
cb.addItem("cb3");
panel.add(field1);
panel.add(field2);
panel.add(cb);
return panel;
}
}