[java]代码库public class font implements ActionListener,ListSelectionListener{

private JTextField textField_1;

private JTextField textField_2;

private JTextField textField_3;

private JList list_1;

private JList list_2;

private JList fontList;

JButton button;

JButton button_1;

JLabel label_4;

private JFrame frame;

String fontName="宋体";

int fontStyle=Font.PLAIN, fontSize=12;

Font font1;

public font(){

frame=new JFrame();

frame.getContentPane().setLayout(null);

frame.setTitle("字体");

frame.setVisible(true);

frame.setBounds(100, 100, 425, 330);

final JLabel label = DefaultComponentFactory.getInstance().createLabel("字体(F):");

label.setBounds(10, 0, 62, 18);

frame.getContentPane().add(label);

final JScrollPane scrollPane = new JScrollPane();

scrollPane.setBounds(10, 54, 129, 133);

frame.getContentPane().add(scrollPane);

fontList = new JList();

GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();

String[] fonts = ge.getAvailableFontFamilyNames();

fontList.setListData(fonts);

scrollPane.setViewportView(fontList);

fontList.addListSelectionListener(this);

final JScrollPane scrollPane_1 = new JScrollPane();

scrollPane_1.setBounds(145, 54, 99, 133);

frame.getContentPane().add(scrollPane_1);

list_1 = new JList();

scrollPane_1.setViewportView(list_1);

String []fontStyle1={"粗体","斜体","常规","粗斜体"};

list_1.setListData(fontStyle1);

list_1.addListSelectionListener(this);

final JScrollPane scrollPane_2 = new JScrollPane();

scrollPane_2.setBounds(250, 54, 66, 133);

frame.getContentPane().add(scrollPane_2);

list_2 = new JList();

scrollPane_2.setViewportView(list_2);

String []size={"12","14","16","18","20","22","24","26","28","36","48","72"};

list_2.setListData(size);

list_2.addListSelectionListener(this);

final JLabel label_1 = new JLabel();

label_1.setText("字形(Y):");

label_1.setBounds(146, 0, 66, 18);

frame.getContentPane().add(label_1);

final JLabel label_2 = new JLabel();

label_2.setText("大小(S):");

label_2.setBounds(250, 0, 66, 18);

frame.getContentPane().add(label_2);

button = new JButton();

button.setText("确定");

button.setBounds(345, 26, 62, 28);

frame.getContentPane().add(button);

button.addActionListener(this);

button_1 = new JButton();

button_1.setText("取消");

button_1.setBounds(345, 80, 62, 28);

frame.getContentPane().add(button_1);

button_1.addActionListener(this);

textField_1 = new JTextField();

textField_1.setBounds(10, 26, 129, 28);

frame.getContentPane().add(textField_1);

textField_2 = new JTextField();

textField_2.setBounds(145, 24, 99, 28);

frame.getContentPane().add(textField_2);

textField_3 = new JTextField();

textField_3.setBounds(250, 24, 66, 30);

frame.getContentPane().add(textField_3);

final JPanel panel = new JPanel();

panel.setBackground(Color.LIGHT_GRAY);

panel.setLayout(null);

panel.setBounds(49, 222, 267, 64);

frame.getContentPane().add(panel);

final JLabel label_3 = new JLabel();

label_3.setBounds(10, 198, 56, 20);

frame.getContentPane().add(label_3);

label_3.setFont(new Font("", Font.BOLD, 14));

label_3.setText("示例：");

label_4 = new JLabel();

label_4.setBounds(0, 0, 267, 64);

panel.add(label_4);

label_4.setText("AaBbCc");

}

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

Object s = e.getSource();

if (s.equals(button)) {

textArea.setFont(font1);

frame.setVisible(false);

} else if (s.equals(button_1)) {

frame.setVisible(false);

}

}

@Override

public void valueChanged(ListSelectionEvent e) {

// TODO Auto-generated method stub

Object s=e.getSource();

if(s.equals(fontList)){

fontName = (String) fontList.getSelectedValue();

font1 = new Font(fontName, fontStyle, fontSize);

label_4.setFont(font1);

textField_1.setText(fontName);

}else if(s.equals(list_1)){

int shape;

String style=list_1.getSelectedValue().toString();

if(style=="粗体"){

shape=Font.BOLD;

}else if(style=="斜体"){

shape=Font.ITALIC;

}else if(style=="常规"){

shape=Font.PLAIN;

}else{

shape=Font.BOLD+Font.PLAIN;

}

fontStyle=shape;

font1 = new Font(fontName, fontStyle, fontSize);

label_4.setFont(font1);

textField_2.setText(style);

}else if(s.equals(list_2)){

String size1=list_2.getSelectedValue().toString();

fontSize=Integer.parseInt(size1);

font1 = new Font(fontName, fontStyle, fontSize);

label_4.setFont(font1);

textField_3.setText(size1);

}

}

}