java – 使用普通的类方法调用actionPerformed方法

void myFunction()
{
      actionPerformed(ActionEvent ae);
}

public void actionPerformed(ActionEvent ae)
{
      //my code
}

如果你想要的话,JButton的一些actionPerformed()方法在按下JTextField里面的ENTER时执行,那么我猜你可以使用来自AbstractButton类的 doClick()方法来实现这一点.虽然这种方法,可能会按下ENTER键覆盖JTextField的原始行为:(

请看下面粘贴的代码,看看这是什么,适合您的需求:-) !!!

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ButtonClickExample
{
    private JTextField tfield;
    private JButton button;
    private JLabel label;

    private ActionListener actions = new ActionListener()
    {
        @Override
        public void actionPerformed(ActionEvent ae)
        {
            if (ae.getSource() == button)
            {
                label.setText(tfield.getText());
            }
            else if (ae.getSource() == tfield)
            {
                button.doClick();
            }
        }
    }; 

    private void displayGUI()
    {
        JFrame frame = new JFrame("Button Click Example");
        frame.setDefaultCloSEOperation(JFrame.DISPOSE_ON_CLOSE);

        JPanel contentPane = new JPanel();
        contentPane.setLayout(new BorderLayout(5,5));

        JPanel centerPanel = new JPanel();
        tfield = new JTextField("",10);
        button = new JButton("Click Me or not,YOUR WISH");
        tfield.addActionListener(actions);
        button.addActionListener(actions);
        centerPanel.add(tfield);
        centerPanel.add(button);
        contentPane.add(centerPanel,BorderLayout.CENTER);

        label = new JLabel("Nothing to show yet",JLabel.CENTER);
        contentPane.add(label,BorderLayout.PAGE_END);

        frame.setContentPane(contentPane);
        frame.pack();
        frame.setLocationByPlatform(true);
        frame.setVisible(true);
    }

    public static void main(String[] args)
    {
        EventQueue.invokeLater(new Runnable()
        {
            @Override
            public void run()
            {
                new ButtonClickExample().displayGUI();
            }
        });
    }
}