想用java做一个像windows里一样的txt编辑软件，涉及到字体设置选项卡，在网上找了很久都没找到，就生气啦自己写一个，现在贴这里分享一下，下次再遇到这样的问题就不用自己亲自打代码啦！
package 实验; import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent; import javax.swing.*;
import javax.swing.border.BevelBorder; /**
* 字体格式设置对话框
*/ public class FontFormat extends JDialog { private JLabel nameLb;
private JLabel styleLb;
private JLabel sizeLb;
private JLabel presLb;
private JTextField nameTx;
private JTextField styleTx;
private JTextField sizeTx;
private JTextField presTx;
private JList nameLt;
private JList styleLt;
private JList sizeLt;
private JScrollPane jScrollPane1;
private JScrollPane jScrollPane2;
private JScrollPane jScrollPane3;
private JButton approve;
private JButton cancel;
private JButton chose;
private JRadioButton[] language = new JRadioButton[2];
private ButtonGroup languageg;
private String Slanguage[] = { new String("李涛"), new String("ABC") }; private static JFrame frame;
public Font font, newFont;// 字体类
private Color color;// 颜色类
Color newColor; private JFileChooser fileChoose = new JFileChooser();// 文件选择类实例
private JDialog colorDlg;// 颜色对话框
private JColorChooser colorChoose = new JColorChooser();// 颜色选择类实例 private GraphicsEnvironment environment; // 该类中又获取系统字体的方法；
private String[] fontNameSet;// 字体‘逻辑名’集
// 字体‘样式’集的字符串数组
private String[] fontStyleSet = { "常规", "倾斜", "加粗", "倾斜 加粗" };
// 字体‘样式’集的常量数组
private Integer[] fontCon = { Font.PLAIN, Font.ITALIC, Font.BOLD,
Font.BOLD | Font.ITALIC };
// 字体‘大小’集
private String[] fontSizeSet = { "6", "7", "8", "9", "10", "11", "12",
"14", "16", "18", "20", "22", "24", "26", "28", "36", "48", "72" }; public static void main(String args[]) {// 主函数
FontFormat a = new FontFormat();
a.setVisible(true);
} public FontFormat() {// 无参构造函数
super(frame, "李涛—字体设置窗口", true);
frame = new JFrame();
initGUI();
} public FontFormat(JFrame frame) {// 含参构造函数
super(frame, "李涛—字体设置窗口", true);
this.frame = frame;// 父窗口中必须有一个public的Font对象
// setAlwaysOnTop(true);
initGUI();
} private void initGUI() {// 字体格式选择器的界面初始化
try {
getContentPane().setLayout(null);
environment = GraphicsEnvironment.getLocalGraphicsEnvironment();// GraphicsEnvironment是一个抽象类，不能实例化，只能用其中的静态方法获取一个实例
fontNameSet = environment.getAvailableFontFamilyNames();// 获取系统字体
addMenu();// 加入菜单
initFont();// 初始化字体
// pack();
setSize(380, 337);
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
setWindowPos();// 使窗口屏幕居中
setResizable(false);// 大小不可变
} catch (Exception e) {
e.printStackTrace();
}
} private void initFont() {// 初始化字体
// 设置默认字体格式为父窗口font对向的字体格式
if (frame.getFont() == null) {
nameTx.setText(fontNameSet[0]);
styleTx.setText(fontStyleSet[0]);
sizeTx.setText("12");
nameLt.setSelectedValue(fontNameSet[0], true);
styleLt.setSelectedIndex(0);
sizeLt.setSelectedValue("12", true);
font = new Font(fontNameSet[0], fontCon[0], 12);
newFont = font;// 保存原来的字体格式
presTx.setFont(font);
// JOptionPane.showMessageDialog(null, "ccac");
} else {
int idxStyle = 0;
for (int i = 0; i < fontCon.length; i++) {
if (fontCon[i] == frame.getFont().getStyle())
idxStyle = i;
}
nameTx.setText(frame.getFont().getName());// 改text
styleTx.setText(fontStyleSet[idxStyle]);
sizeTx.setText("" + frame.getFont().getSize());
nameLt.setSelectedValue(frame.getFont().getName(), true);// 改list显示
styleLt.setSelectedIndex(idxStyle);
sizeLt.setSelectedValue("" + frame.getFont().getSize(), true);
font = new Font(fontNameSet[0], fontCon[0], 12);// 保存当前格式
newFont = font;// 保存原来的字体格式
presTx.setFont(font);// 预览中设为当前模式
}
} private void addMenu() {// 加入菜单
// 4个lable---------------------------------------------------------------------------------
nameLb = new JLabel();
getContentPane().add(nameLb);
nameLb.setText("字体：");
nameLb.setBounds(10, 14, 120, 26);
nameLb.setFont(new java.awt.Font("SimSun", 1, 14)); styleLb = new JLabel();
getContentPane().add(styleLb);
styleLb.setText("字型：");
styleLb.setBounds(151, 14, 120, 23);
styleLb.setFont(new java.awt.Font("SimSun", 1, 14)); sizeLb = new JLabel();
getContentPane().add(sizeLb);
sizeLb.setText("大小：");
sizeLb.setBounds(275, 14, 79, 24);
sizeLb.setFont(new java.awt.Font("SimSun", 1, 14)); presLb = new JLabel();
getContentPane().add(presLb);
presLb.setText("预览：");
presLb.setBounds(151, 150, 120, 80);
presLb.setFont(new java.awt.Font("SimSun", 1, 14)); // 4个textfield---------------------------------------------------------------------------------
nameTx = new JTextField();
nameTx.setEditable(false);
getContentPane().add(nameTx);
nameTx.setBounds(10, 42, 120, 22); styleTx = new JTextField();
styleTx.setEditable(false);
getContentPane().add(styleTx);
styleTx.setBounds(151, 42, 100, 21); sizeTx = new JTextField();
sizeTx.setEditable(false);
getContentPane().add(sizeTx);
sizeTx.setBounds(275, 42, 79, 22); presTx = new JTextField();
presTx.setEditable(false);
getContentPane().add(presTx);
presTx.setBounds(151, 200, 203, 61);
presTx.setText(Slanguage[1]); // 3个下拉条--+监听-----------------------------------------------------------------------------
jScrollPane1 = new JScrollPane();
getContentPane().add(jScrollPane1);
jScrollPane1.setBounds(10, 74, 120, 210);
{
ListModel fontNameModel = new DefaultComboBoxModel(fontNameSet);
nameLt = new JList();
jScrollPane1.setViewportView(nameLt);
nameLt.setModel(fontNameModel);
nameLt.setBounds(274, 193, 90, 86);
nameLt.setBorder(BorderFactory
.createEtchedBorder(BevelBorder.LOWERED));
nameLt.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
nameLtMouseClicked(evt);
}
});
} jScrollPane2 = new JScrollPane();
getContentPane().add(jScrollPane2);
jScrollPane2.setBounds(151, 74, 100, 103);
{
ListModel fontStyleModel = new DefaultComboBoxModel(fontStyleSet);
styleLt = new JList();
jScrollPane2.setViewportView(styleLt);
styleLt.setModel(fontStyleModel);
styleLt.setBounds(310, 215, 70, 102);
styleLt.setBorder(BorderFactory
.createEtchedBorder(BevelBorder.LOWERED));
styleLt.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
styleLtMouseClicked(evt);
}
});
} jScrollPane3 = new JScrollPane();
getContentPane().add(jScrollPane3);
jScrollPane3.setBounds(275, 75, 79, 100);
{
ListModel fontSizeModel = new DefaultComboBoxModel(fontSizeSet);
sizeLt = new JList();
jScrollPane3.setViewportView(sizeLt);
sizeLt.setModel(fontSizeModel);
sizeLt.setBounds(300, 218, 54, 102);
sizeLt.setBorder(BorderFactory
.createEtchedBorder(BevelBorder.LOWERED));
sizeLt.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
sizeLtMouseClicked(evt);
}
});
}// ------------------------------------------------------------------------------------- // 中英选项(---------------------------------------------------------------------------------
languageg = new ButtonGroup();
language[0] = new JRadioButton("中");
getContentPane().add(language[0]);
language[0].setSelected(false);// 初始化显示
language[0].setBounds(271, 179, 40, 20);
language[0].setFont(new java.awt.Font("SimSun", 1, 12));
languageg.add(language[0]);
language[0].addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
presTx.setText(Slanguage[0]);
}
}); language[1] = new JRadioButton("英");
getContentPane().add(language[1]);
language[1].setSelected(true);
language[1].setBounds(321, 179, 40, 20);
language[1].setFont(new java.awt.Font("SimSun", 1, 12));
languageg.add(language[1]);
language[1].addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
presTx.setText(Slanguage[1]);
}
}); // 3个按钮+监听---------------------------------------------------------------------------------
// 确定按钮
approve = new JButton();
getContentPane().add(approve);
approve.setText("确定");
approve.setBounds(151, 265, 67, 20);
approve.setFont(new java.awt.Font("KaiTi_GB2312", 1, 12));
approve.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
approveActionPerformed(evt);
}
}); // 取消按钮
cancel = new JButton();
getContentPane().add(cancel);
cancel.setText("取消");
cancel.setBounds(219, 265, 67, 20);
cancel.setFont(new java.awt.Font("KaiTi_GB2312", 1, 12));
cancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
cancelActionPerformed(evt);
}
}); // 颜色选择按钮
chose = new JButton();
getContentPane().add(chose);
chose.setText("颜色");
chose.setBounds(287, 265, 67, 20);
chose.setFont(new java.awt.Font("KaiTi_GB2312", 1, 12));
chose.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
choseActionPerformed(evt);
}
});// -------------------------------------------------------------------------
} private void setWindowPos() {// 窗口居中
Toolkit kit = Toolkit.getDefaultToolkit();// 抽象类，通过静态方法获取实例
Dimension frameSize = new Dimension(), screenSize = kit.getScreenSize(); // 获取屏幕的大小
getSize(frameSize); // 获取窗口大小
setLocation((screenSize.width - frameSize.width) / 2,
(screenSize.height - frameSize.height) / 2);
} private void nameLtMouseClicked(MouseEvent evt) {// 字体逻辑名列表的鼠标单击事件
nameTx.setText(nameLt.getSelectedValue().toString());
font = new Font(nameTx.getText(), font.getStyle(), font.getSize());
presTx.setFont(font);
} private void styleLtMouseClicked(MouseEvent evt) {// 字体样式列表的鼠标单击事件
String temp = styleLt.getSelectedValue().toString();
styleTx.setText(temp);
int index = 0;
while (index < 4 && !fontStyleSet[index].equals(temp)) {
index++;
}
font = new Font(font.getName(), fontCon[index], font.getSize());
presTx.setFont(font);
} private void sizeLtMouseClicked(MouseEvent evt) {// 字体大小列表的鼠标点击事件
sizeTx.setText(sizeLt.getSelectedValue().toString());
font = new Font(font.getName(), font.getStyle(),
Integer.parseInt(sizeTx.getText()));
presTx.setFont(font);
} private void approveActionPerformed(ActionEvent evt) {// 确定按钮的触发事件
String name = nameTx.getText();
int style = fontCon[styleLt.getSelectedIndex()];
int size = Integer.parseInt(sizeTx.getText());
font = new Font(name, style, size);
frame.setFont(font); // 父窗口的Font对象
newFont = font;// 更新原来保存格式
newColor = color;// 更新颜色
this.dispose();
} private void cancelActionPerformed(ActionEvent evt) {// 取消按钮的触发事件
this.dispose();
} private void choseActionPerformed(ActionEvent evt) {// 颜色选择触发事件
if (colorDlg == null) {
colorDlg = JColorChooser.createDialog(FontFormat.this,
"Select Text Color", true, colorChoose,
new ColorOKListener(), null);
}
colorChoose.setColor(color = presTx.getForeground());
colorDlg.setVisible(true);
} class ColorOKListener implements ActionListener {// 重写颜色按钮点击监听类覆盖接口ActionListener
public void actionPerformed(ActionEvent e) {
Color c = colorChoose.getColor();
color = c;
presTx.setForeground(c);
presTx.repaint();
}
}
}