java swing 单击事件mouseClicked与一般事件actionPerformed区别

java swing 单击事件mouseClicked与一般事件actionPerformed区别

分类： swing 2011-10-18 15:43 692人阅读 评论(0) 收藏 举报

//鼠标单击事件无论什么时候都监听，即使按钮已经不能用了，事件依然走；

//一般事件，在设置按钮不可用后就不在走了

例子很能说明问题：

package eeeee;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

import org.dyno.visual.swing.layouts.Constraints;
import org.dyno.visual.swing.layouts.GroupLayout;
import org.dyno.visual.swing.layouts.Leading;

//VS4E -- DO NOT REMOVE THIS LINE!
public class bbbb extends JFrame {

    private static final long serialVersionUID = 1L;
    private JButton jButton0;
    private JButton jButton1;
    private static final String PREFERRED_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";
    public bbbb() {
        initComponents();
    }

    private void initComponents() {
        setLayout(new GroupLayout());
        add(getJButton0(), new Constraints(new Leading(52, 10, 10), new Leading(39, 10, 10)));
        add(getJButton1(), new Constraints(new Leading(195, 10, 10), new Leading(39, 12, 12)));
        setSize(320, 240);
    }

    private JButton getJButton1() {
        if (jButton1 == null) {
            jButton1 = new JButton();
            jButton1.setText("jButton1");
            jButton1.addActionListener(new ActionListener() {

                public void actionPerformed(ActionEvent event) {
                    jButton1ActionActionPerformed(event);
                }
            });
        }
        return jButton1;
    }

    private JButton getJButton0() {
        if (jButton0 == null) {
            jButton0 = new JButton();
            jButton0.setText("jButton0");
            jButton0.addMouseListener(new MouseAdapter() {

                public void mouseClicked(MouseEvent event) {
                    jButton0MouseMouseClicked(event);
                }
            });
        }
        return jButton0;
    }

    private static void installLnF() {
        try {
            String lnfClassname = PREFERRED_LOOK_AND_FEEL;
            if (lnfClassname == null)
                lnfClassname = UIManager.getCrossPlatformLookAndFeelClassName();
            UIManager.setLookAndFeel(lnfClassname);
        } catch (Exception e) {
            System.err.println("Cannot install " + PREFERRED_LOOK_AND_FEEL
                    + " on this platform:" + e.getMessage());
        }
    }

    /**
     * Main entry of the class.
     * Note: This class is only created so that you can easily preview the result at runtime.
     * It is not expected to be managed by the designer.
     * You can modify it as you like.
     */
    public static void main(String[] args) {
        installLnF();
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                bbbb frame = new bbbb();
                frame.setDefaultCloseOperation(bbbb.EXIT_ON_CLOSE);
                frame.setTitle("bbbb");
                frame.getContentPane().setPreferredSize(frame.getSize());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }
//00
    private void jButton0MouseMouseClicked(MouseEvent event) {
        jButton0.setEnabled(false);
        System.out.println("click 00");
    }
//11
    private void jButton1ActionActionPerformed(ActionEvent event) {
        jButton1.setEnabled(false);
        System.out.println("click 1111");
    }

}

package eeeee;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

import org.dyno.visual.swing.layouts.Constraints;
import org.dyno.visual.swing.layouts.GroupLayout;
import org.dyno.visual.swing.layouts.Leading;

//VS4E -- DO NOT REMOVE THIS LINE!
public class bbbb extends JFrame {

	private static final long serialVersionUID = 1L;
	private JButton jButton0;
	private JButton jButton1;
	private static final String PREFERRED_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";
	public bbbb() {
		initComponents();
	}

	private void initComponents() {
		setLayout(new GroupLayout());
		add(getJButton0(), new Constraints(new Leading(52, 10, 10), new Leading(39, 10, 10)));
		add(getJButton1(), new Constraints(new Leading(195, 10, 10), new Leading(39, 12, 12)));
		setSize(320, 240);
	}

	private JButton getJButton1() {
		if (jButton1 == null) {
			jButton1 = new JButton();
			jButton1.setText("jButton1");
			jButton1.addActionListener(new ActionListener() {
	
				public void actionPerformed(ActionEvent event) {
					jButton1ActionActionPerformed(event);
				}
			});
		}
		return jButton1;
	}

	private JButton getJButton0() {
		if (jButton0 == null) {
			jButton0 = new JButton();
			jButton0.setText("jButton0");
			jButton0.addMouseListener(new MouseAdapter() {
	
				public void mouseClicked(MouseEvent event) {
					jButton0MouseMouseClicked(event);
				}
			});
		}
		return jButton0;
	}

	private static void installLnF() {
		try {
			String lnfClassname = PREFERRED_LOOK_AND_FEEL;
			if (lnfClassname == null)
				lnfClassname = UIManager.getCrossPlatformLookAndFeelClassName();
			UIManager.setLookAndFeel(lnfClassname);
		} catch (Exception e) {
			System.err.println("Cannot install " + PREFERRED_LOOK_AND_FEEL
					+ " on this platform:" + e.getMessage());
		}
	}

	/**
	 * Main entry of the class.
	 * Note: This class is only created so that you can easily preview the result at runtime.
	 * It is not expected to be managed by the designer.
	 * You can modify it as you like.
	 */
	public static void main(String[] args) {
		installLnF();
		SwingUtilities.invokeLater(new Runnable() {
			@Override
			public void run() {
				bbbb frame = new bbbb();
				frame.setDefaultCloseOperation(bbbb.EXIT_ON_CLOSE);
				frame.setTitle("bbbb");
				frame.getContentPane().setPreferredSize(frame.getSize());
				frame.pack();
				frame.setLocationRelativeTo(null);
				frame.setVisible(true);
			}
		});
	}
//00
	private void jButton0MouseMouseClicked(MouseEvent event) {
		jButton0.setEnabled(false);
		System.out.println("click 00");
	}
//11
	private void jButton1ActionActionPerformed(ActionEvent event) {
		jButton1.setEnabled(false);
		System.out.println("click 1111");
	}

}

点击button0后，它设置成不可用，但它依然响应事件（里面的打印输出了）

而点击button1后，设置它不可用，再点击它，就没反应了，说明真的不可用了。

从这里我们直观的看出两种事件的区别，更深的道理我就不说了，嘿嘿