Java记事本
各位大哥，大姐们！
        我想问一下如何用javax.swing编一个记事本里的字体设置功能，还有替换功能，我想了好久也没有想到，希望大家帮我一下。

------解决方案--------------------
swing中有控件JEditorPane这个可以.
而且JAVA的安装目录下有记事本的例子程序

------解决方案--------------------
JAVA 字体控件

import java.awt.Frame;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JLabel;
import java.awt.Rectangle;
import javax.swing.JTextField;
import javax.swing.JList;
import javax.swing.BorderFactory;
import javax.swing.border.Border;
import javax.swing.border.TitledBorder;
import java.awt.Color;
import javax.swing.JButton;
import java.awt.SystemColor;
import java.awt.GraphicsEnvironment;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import java.awt.event.*;
import javax.swing.event.*;
import java.awt.Font;

public class FrmFont
extends JDialog {

JLabel jLabel1 = new JLabel();
JTextField txtFontFace = new JTextField();
JLabel jLabel2 = new JLabel();
JTextField txtFontStyle = new JTextField();
JLabel jLabel3 = new JLabel();
JTextField txtFontSize = new JTextField();

JPanel jPanel1 = new JPanel();
Border border1 = BorderFactory.createEmptyBorder();
Border border2 = new TitledBorder(border1, "事例 ");
JButton btnOK = new JButton();
JButton btnCancle = new JButton();
JLabel lblDemo = new JLabel();
Border border3 = BorderFactory.createLineBorder(SystemColor.controlText, 2);
JScrollPane jScrollPane1 = new JScrollPane();
JScrollPane jScrollPane2 = new JScrollPane();
JScrollPane jScrollPane3 = new JScrollPane();
/////////////////////////////////////////
JList lstFontFace;
JList lstFontStyle;
JList lstFontSize;
/////////////////////////////////////////
/////////////////////////////////////////
String curFontFace = "宋体 ";
int curFontStyle = Font.PLAIN;
int curFontSize = 12;

Font font;
JTextArea txtArea;
////////////////////////////////////////
public FrmFont(Frame owner, String title, boolean modal, JTextArea txtArea) {
super(owner, title, modal);
this.txtArea = txtArea;
try {
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
jbInit();
pack();
}
catch (Exception exception) {
exception.printStackTrace();
}
}

public FrmFont(Frame owner, JTextArea txtArea) {
this(owner, "DialogFont ", true, txtArea);

}

private void jbInit() throws Exception {
//取得系统中所有的字体
GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
String[] fontFaces = env.getAvailableFontFamilyNames();
String[] fontStyle = {
"常规 ", "斜体 ", "粗体 "};
String[] fontSize = {
"8 ", "9 ", "10 ", "11 ", "12 ", "14 ", "16 ", "18 ", "20 ", "22 ", "24 ", "26 ",
"28 ", "36 ", "48 ", "72 "};
lstFontFace = new JList(fontFaces);
lstFontStyle = new JList(fontStyle);
lstFontSize = new JList(fontSize);

border2 = new TitledBorder(BorderFactory.createEtchedBorder(Color.white,
new Color(148, 145, 140)), "示例 ");