所以基本上我在这里有点困惑,我使用的是 Eclipse 的 WindowsPro Builder 插件,它使所有 JFrame 组件都在一个自定义的 initialize() 类中。这给我带来了一个问题,通常我会在开始时定义我的组件,以便我可以通过我的程序公开访问它们。不,我有第二节课,但我无法访问我的组件。例如,我不知道如何为整个初始化类制作统一的 ActionListener。
我也想从 textarea 获取输入,但我该怎么做呢?当一切都在范围之外?如您所见,我调用了 SaveToFile 类,在该类中我想从 textarea 获取输入,但是我该怎么做呢?
import javax.swing.*;
public class FunctionsGUI {
private JFrame frame;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
FunctionsGUI window = new FunctionsGUI();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public FunctionsGUI() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize () {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch(Exception e) {
System.out.println("Error setting native LAF: " + e);
}
frame = new JFrame();
frame.setBounds(100, 100, 571, 531);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SpringLayout springLayout = new SpringLayout();
frame.getContentPane().setLayout(springLayout);
JTextPane textPane = new JTextPane();
springLayout.putConstraint(SpringLayout.NORTH, textPane, 10, SpringLayout.NORTH, frame.getContentPane());
springLayout.putConstraint(SpringLayout.WEST, textPane, 10, SpringLayout.WEST, frame.getContentPane());
springLayout.putConstraint(SpringLayout.SOUTH, textPane, 462, SpringLayout.NORTH, frame.getContentPane());
springLayout.putConstraint(SpringLayout.EAST, textPane, 545, SpringLayout.WEST, frame.getContentPane());
frame.getContentPane().add(textPane);
frame.setLocationRelativeTo(null);
frame.setTitle("Calcolo");
JMenuBar menuBar = new JMenuBar();
frame.setJMenuBar(menuBar);
JMenu mnFile = new JMenu("File");
menuBar.add(mnFile);
final JMenuItem mntmSave = new JMenuItem("Save");
mntmSave.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
SaveToFile sv = new SaveToFile();
}
});
mnFile.add(mntmSave);
JMenu mnOptions = new JMenu("Options");
menuBar.add(mnOptions);
JMenu mnHelp = new JMenu("Help");
menuBar.add(mnHelp);
final JMenuItem AboutMenu = new JMenuItem("About");
AboutMenu.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (e.getSource().equals(AboutMenu)) {
JDialog dialog = new JDialog();
dialog.setTitle("Search Dialog");
dialog.getContentPane().add(new JLabel("Just a test"));
dialog.setSize(300,300);
dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
dialog.setLocationRelativeTo(frame);
dialog.setVisible(true);
if (e.getSource().equals(mntmSave));
SaveToFile sv = new SaveToFile ();
}
}
});
mnHelp.add(AboutMenu);
}
}