您的Move_the_ball类必须实现java.awt.event.ActionListener接口(interface)才能工作。 import java.awt.*; import java.awt.event.*; public class Move_the_ball extends Frame implements ActionListener { public void actionPerformed(ActionEvent e) { // handle the e event }...
* Factory method for create a {@link TrayIcon} object. * * @param imgFilename * the img filename * @param appName * the app name * @param systemTrayPopupMenu * the system tray popup menu * @param actionListeners * the action listeners * @return the new {@link TrayIcon}. */ pub...
/** * Factory method for create a {@link TrayIcon} object. * * @param imgFilename * the img filename * @param appName * the app name * @param systemTrayPopupMenu * the system tray popup menu * @param actionListeners * the action listeners * @return the new {@link TrayIcon}. *...