java回车触发按钮的代码

可以实现回车触发按钮，或者是在文本输入框的时候，回车触发一个事件。

使用的时候，只要将SwingUtils .enterPressesWhenFocused(JButton)这样就可以实现回车时候，触发按钮。

另外文本输入框回车触发事件则是：SwingUtils .enterPressesWhenFocused(JTextField textField,ActionListener actionListener) 。其中actionListener是需要触发的事件。

import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JTextField;
import javax.swing.KeyStroke;

public class SwingUtils {

    /**
     * 对指定的button添加回车驱动事件的功能
     * @param button
     */
    public static void enterPressesWhenFocused(JButton button) {
        button.registerKeyboardAction(button.getActionForKeyStroke(KeyStroke
                .getKeyStroke(KeyEvent.VK_SPACE, 0, false)),
                KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, false),
                JComponent.WHEN_FOCUSED);

        button.registerKeyboardAction(button.getActionForKeyStroke(KeyStroke
                .getKeyStroke(KeyEvent.VK_SPACE, 0, true)),
                KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true),
                JComponent.WHEN_FOCUSED);
    }

    /**
     * 在文本输入框中回车触发事件
     * @param textField
     * @param actionListener
     */
    public static void enterPressesWhenFocused(JTextField textField,
            ActionListener actionListener) {
        textField.registerKeyboardAction(actionListener,
                KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, false),
                JComponent.WHEN_FOCUSED);

        textField.registerKeyboardAction(actionListener,
                KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true),
                JComponent.WHEN_FOCUSED);
    }

}