JButton是AbstractButton类的扩展，当按钮被选中，点击时会出现不同的状态，Swing本身的展示效果在绘制面板的时候不尽人意，因此可以通过更改按钮的鼠标事件来美化按钮。

1.TestFrame.java，用于绘制主面板的组件，以下是源码：

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.Font;

import java.awt.Insets;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JMenuBar;

import javax.swing.JTextField;

import javax.swing.UIManager;

import javax.swing.plaf.basic.BasicButtonUI;

public class TestFrame extends JFrame {

private JTextField searchText = null;

private JButton searchBtn = null;

private JButton editBtn = null;

private JButton saveBtn = null;

public TestFrame() {

setLookAndFeel();

init();

}

/**

* 为主面板设置皮肤

*/

private void setLookAndFeel() {

try {

UIManager

.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");

} catch (Exception e) {

e.printStackTrace();

}

}

/**

* 增加工具栏的组件，并设置样式

*/

private JMenuBar addMenuBar() {

JMenuBar menuBar = new JMenuBar();

menuBar.setLayout(new FlowLayout(40, 4, 0));

// 增加文件选择按钮

menuBar.add(createBtn("File", "./src/folder_up.png"));

// 增加编辑按钮

editBtn = createBtn("Edit", "./src/page_edit.png");

//editBtn.setEnabled(false);

menuBar.add(editBtn);

// 增加保存文件按钮

saveBtn = createBtn("Save", "./src/folder_down.png");

//saveBtn.setEnabled(false);

menuBar.add(saveBtn);

// 增加查询输入文本框

searchText = new JTextField();

searchText.setPreferredSize(new Dimension(140, 27));

menuBar.add(searchText);

// 增加查询按钮

searchBtn = createBtn("Search", "./src/search.png");

//searchBtn.setEnabled(false);

menuBar.add(searchBtn);

return menuBar;

}

/**

* 创建工具栏按钮

*

* @author lqj

* @param text

* 按钮名称

* @param icon

* 按钮图标所在路径

* @return 返回添加样式和监听器后的按钮

*/

private JButton createBtn(String text, String icon) {

JButton btn = new JButton(text, new ImageIcon(icon));

btn.setUI(new BasicButtonUI());// 恢复基本视觉效果

btn.setPreferredSize(new Dimension(80, 27));// 设置按钮大小

btn.setContentAreaFilled(false);// 设置按钮透明

btn.setFont(new Font("粗体", Font.PLAIN, 15));// 按钮文本样式

btn.setMargin(new Insets(0, 0, 0, 0));// 按钮内容与边框距离

btn.addMouseListener(new MyMouseListener(this));

return btn;

}

/**

* @author lqj

* 初始化主面板和工作栏内容

*/

private void init() {

JMenuBar menuBar = addMenuBar();

// menuBar.setBackground(Color.WHITE);

menuBar.setPreferredSize(new Dimension(1400, 30));

this.setJMenuBar(menuBar);

this.setSize(1320, 750);

this.setLocationRelativeTo(null);

this.setVisible(true);

this.setTitle("TestButton");

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

// this.setBackground(Color.gray);

}

// main

public static void main(String[] args) {

new TestFrame();

}

}

2.MyMouseListener.java，用于增加鼠标事件，源码如下：

import java.awt.Color;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import javax.swing.JButton;

import javax.swing.border.Border;

import javax.swing.border.EtchedBorder;

public class MyMouseListener implements MouseListener {

private TestFrame frame;

public MyMouseListener() {

// TODO Auto-generated constructor stub

}

public MyMouseListener(TestFrame f) {

this.frame = f;

}

@Override

public void mouseClicked(MouseEvent e) {

// TODO Auto-generated method stub

String btnName =((JButton)e.getSource()).getText();

if ("File".equals(btnName.trim())) {

//鼠标点击事件

}

}

@Override

public void mousePressed(MouseEvent e) {

// TODO Auto-generated method stub

JButton btn = (JButton) e.getComponent();

Border etchedBorder = new EtchedBorder(EtchedBorder.RAISED);// 设置边框凸显

btn.setBorder(etchedBorder);

}

@Override

public void mouseReleased(MouseEvent e) {

// TODO Auto-generated method stub

JButton btn = (JButton) e.getComponent();

Border etchedBorder = new EtchedBorder(EtchedBorder.LOWERED);// 设置边框凹显

btn.setBorder(etchedBorder);

}

@Override

public void mouseEntered(MouseEvent e) {

// TODO Auto-generated method stub

JButton btn = (JButton) e.getComponent();

btn.setForeground(new Color(0x33, 0x66, 0xcc));// 设置字体颜色

btn.setBorderPainted(true);// 显示边框

Border etchedBorder = new EtchedBorder(EtchedBorder.LOWERED);// 设置边框凹显

btn.setBorder(etchedBorder);

btn.setRolloverEnabled(true);

}

@Override

public void mouseExited(MouseEvent e) {

// TODO Auto-generated method stub

JButton btn = (JButton) e.getComponent();

btn.setForeground(Color.black);// 设置字体颜色

btn.setBorderPainted(false);// 隐藏边框

}

}

最后上传一张运行的效果图片给大家看！希望对大家有用！