java反编译程序

package com.mdj.test;

import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.Toolkit;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JWindow;

import com.mdj.unmake.Main;
/**
*
* @author 武汉软件工程职业学院<br>孟德军
* @version 1.0
*/
public class Start extends JFrame {
private JWindow window;
private String filepath;

public Start() {
filepath = System.getProperty("user.dir");
window = new JWindow(this);
Image logo = Toolkit.getDefaultToolkit().getImage(
filepath + "//start.jpg");
Dimension scrSize = Toolkit.getDefaultToolkit().getScreenSize();

JPanel p = new JPanel(new GridLayout(2,2));
JLabel a = new JLabel("******** 欢迎使用本软件,/n 版权所有:孟德军 *********",
JLabel.CENTER);
a.setFont(new Font("宋体",Font.ITALIC,16));
JLabel b = new JLabel(new ImageIcon(logo), JLabel.CENTER);

p.add(b);
p.add(a);

window.add(p, "Center");

window.setLocation(scrSize.width /5, scrSize.height / 4);
window.setSize(scrSize.width / 3 + 50, scrSize.height / 3);
window.show();
window.toFront();
try {
Thread.currentThread().sleep(2000);
// Thread.currentThread();可以获得主线程的一个应用。
Main main = new Main("java反编译程序");
main.setVisible(true);

} catch (Exception e) {
e.printStackTrace();
}
window.dispose();

}

public static void main(String args[]) {
System.out.println("server start...please wait a minute!");
new Start();
}
}
///////////////////////////////////////////////////////
package com.mdj.unmake;

import java.awt.Toolkit;

public class Share {
public static final int SCREENHEIGHT = Toolkit.getDefaultToolkit()
.getScreenSize().height;
public static final int SCREENWIDTH = Toolkit.getDefaultToolkit()
.getScreenSize().width;
}
///////////////////////////////////////////////////////
package com.mdj.unmake;

import java.awt.Color;
import java.awt.Cursor;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Image;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.TextArea;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Date;

import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextField;

public class Main extends JFrame {
private TextArea textarea;
private MenuBar mainbar;
private JScrollPane c;
private Menu file, edit, view, help;
private MenuItem load, save, exit, all, copy, fresh, about, back, font,
system, open;
private Font f;
private Toolkit tk;

public Main(String title) {
super(title);
tk = Toolkit.getDefaultToolkit();
Image image = tk.createImage(System.getProperty("user.dir")
+ "//logo.gif"); /* image.gif是你的图标 */
this.setIconImage(image);
init();
display();
this.add(textarea);
// this.add(sb);
this.setMenuBar(mainbar);
this.setSize(Share.SCREENWIDTH / 2, Share.SCREENHEIGHT / 2);
this.setLocation(Share.SCREENWIDTH / 4, Share.SCREENHEIGHT / 4);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
load.addActionListener(new Listener());
save.addActionListener(new Listener());
exit.addActionListener(new Listener());
all.addActionListener(new Listener());
copy.addActionListener(new Listener());
fresh.addActionListener(new Listener());
about.addActionListener(new Listener());
open.addActionListener(new Listener());
back.addActionListener(new Listener());
system.addActionListener(new Listener());
}

private void init() {
Cursor cursor = new Cursor(Cursor.HAND_CURSOR);
f = new Font("宋体", Font.PLAIN, 13);
Font fontset = new Font("宋体", Font.LAYOUT_LEFT_TO_RIGHT, 18);
textarea = new TextArea();
textarea.setFont(fontset);
textarea.setCursor(cursor);
mainbar = new MenuBar();
file = new Menu("文件");
edit = new Menu("编辑");
view = new Menu("视图");
help = new Menu("帮助");
open = new MenuItem("打开");
load = new MenuItem("加载");
save = new MenuItem("保存");
exit = new MenuItem("退出");
all = new MenuItem("全选");
copy = new MenuItem("复制");
fresh = new MenuItem("刷新");
about = new MenuItem("关于");
back = new MenuItem("背景色");
font = new MenuItem("字体");
system = new MenuItem("系统信息");
c = new JScrollPane();
file.setFont(f);
open.setFont(f);
edit.setFont(f);
view.setFont(f);
help.setFont(f);
load.setFont(f);
save.setFont(f);
exit.setFont(f);
copy.setFont(f);
all.setFont(f);
fresh.setFont(f);
about.setFont(f);
back.setFont(f);
font.setFont(f);

system.setFont(f);
// textarea.add(c);
}

public void display() {
mainbar.add(file);
mainbar.add(edit);
mainbar.add(view);
mainbar.add(help);
file.add(load);
file.add(open);
file.add(save);
file.add(exit);
edit.add(all);
edit.add(copy);
edit.add(fresh);
view.add(back);
edit.add(font);
help.add(about);
help.add(system);
}

/*
* public static void main(String args[]) { Main main = new
* Main("java反编译程序"); main.setVisible(true); }
*/

private class Listener implements ActionListener {

public void actionPerformed(ActionEvent s) {
while (s.getSource() == load) {
System.out.println("load");
loadClick();
break;
}
while (s.getSource() == save) {
System.out.println("save");
saveClick();
break;
}
while (s.getSource() == exit) {
System.out.println("exit");
System.exit(0);
}
while (s.getSource() == about) {
JOptionPane.showMessageDialog(null,
"该软件由java编写，开发平台为myeclipse /n 希望大家多多支持！/t 孟德军", "关于",
JOptionPane.INFORMATION_MESSAGE);
break;
}
while (s.getSource() == back) {
colorSet();
break;
}
while (s.getSource() == system) {
systemInformation();
break;
}
while (s.getSource() == font) {
new FontDialog().setVisible(true);
}
while (s.getSource() == open) {
openClick();
break;
}
}

/*
* private void copySet(){ String temp=textarea.getSelectedText();
* //拖动鼠标选取文本。 String Selection text=new String Selection(temp);
* clipboard.setContents(text,null); }
*/
private void colorSet() {
Color newcolor = JColorChooser.showDialog(null, "颜色设置", null);
textarea.setBackground(newcolor);
// textarea.setCursor(new Cursor().getDefaultCursor());

}

private void loadClick() {
Input myinput = new Input();
myinput.setVisible(true);
}

private void openClick() {
JFileChooser jfile = new JFileChooser();
jfile.setFileFilter(new javax.swing.filechooser.FileFilter() {
public boolean accept(File f) { // 设定可用的文件的后缀名
if (f.getName().endsWith(".java") || f.isDirectory()) {
return true;
}
return false;
}

public String getDescription() {
return "文本文件(*.txt)";
}
});
int result = jfile.showOpenDialog(null);
if (result == JFileChooser.OPEN_DIALOG) {
File dir = jfile.getCurrentDirectory();
File file = jfile.getSelectedFile();
textarea.setText(readFile(new File(dir, file.getName())));
// System.out.println(readFile(new File(dir, file.getName())));
} else if (result == JFileChooser.CANCEL_OPTION) {
return;
}

}

private String readFile(File file) {
System.out.println("readfile...");
try {
BufferedReader read = new BufferedReader(new InputStreamReader(
new FileInputStream(file), "GBK"));
String data = null;
StringBuffer buffer = new StringBuffer();
while ((data = read.readLine()) != null) {
buffer.append(data + "/n");
}
read.close();
return buffer.toString();
} catch (IOException e) {
throw new RuntimeException(e);
}

}

private void systemInformation() {
Runtime rt = Runtime.getRuntime();
JOptionPane.showConfirmDialog(null, "剩余内存: " + rt.freeMemory()
+ " KB" + "/n" + "总内存: " + rt.totalMemory() + " KB",
"系统信息", JOptionPane.OK_OPTION, JOptionPane.WARNING_MESSAGE);

}

private void saveClick() {
// 该方法用于保存文件。
JFileChooser jfile = new JFileChooser();
jfile.setFileFilter(new javax.swing.filechooser.FileFilter() {
public boolean accept(File f) { // 设定可用的文件的后缀名
if (f.getName().endsWith(".java") || f.isDirectory()) {
return true;
}
return false;
}

public String getDescription() {
return "文本文件(*.txt)";
}
});
int result = jfile.showSaveDialog(null);
if (result == JFileChooser.APPROVE_OPTION) {
File dir = jfile.getCurrentDirectory();
File file = jfile.getSelectedFile();
write(new File(dir, file.getName() + ".txt"), textarea
.getText());

}
if (result == JFileChooser.CANCEL_OPTION) {
return;
}

}

public void write(File file, String str) {
try {
PrintWriter write = new PrintWriter(new OutputStreamWriter(
new FileOutputStream(file), "UTF-8"));
write.println(str);
write.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}

}

private class Input extends JFrame {
private JLabel classname;
private JTextField classnametext;
private JButton okbutton, cancelbutton;
private Toolkit tcl;

public Input() {
init();
tcl = Toolkit.getDefaultToolkit();
Image image = tcl.createImage(System.getProperty("user.dir")
+ "//logo.gif");
this.setIconImage(image);
this.setSize(250, 100);
this.setLocation(Share.SCREENWIDTH / 4, Share.SCREENHEIGHT / 4);
this.setTitle("请输入完整类名");
this.add(classname);
this.add(classnametext);
this.add(okbutton);
this.add(cancelbutton);
this.setLayout(new FlowLayout());
this.setResizable(false);
cancelbutton.addActionListener(new InputClick());
okbutton.addActionListener(new InputClick());

}

private void init() {
Font f = new Font("宋体", Font.PLAIN, 14);
classname = new JLabel("类名称");
classnametext = new JTextField(20);
okbutton = new JButton("确定");
cancelbutton = new JButton("取消");
okbutton.setMnemonic('y');
cancelbutton.setMnemonic('n');
classname.setFont(f);
okbutton.setFont(f);
cancelbutton.setFont(f);
classnametext.setFont(f);
}

private void loading() {
StringBuffer buffer = new StringBuffer();
System.out.println("loading");
try {
Class classtype = Class.forName(classnametext.getText());
Object instance = classtype.newInstance();
System.out.println(checkClass(classtype.getName()));
System.out.println(checkEmbelLKish(classtype.getName()));
buffer.append("public class " + instance.getClass().getName()
+ "{/n/n");
Field[] field = classtype.getDeclaredFields();
for (int i = 0; i < field.length; i++) {
buffer.append(field[i].toString());
buffer.append(";/n/n");
}
Constructor[] con = classtype.getConstructors();
for (int i = 0; i < con.length; i++) {
buffer.append(con[i].toString());
buffer.append("/n{/n");
buffer.append("// TODO Auto-generated method stub/n");
buffer.append("}/n");
}
Method[] mehtod = classtype.getDeclaredMethods();
for (int x = 0; x < mehtod.length; x++) {
buffer.append("/n");
buffer.append(mehtod[x].toString());
buffer.append("{/n/n");
buffer.append("// TODO Auto-generated method stub/n");
buffer.append("}/n");
}
buffer.append("/n/n}");
buffer
.append("/n/n/** This program copyright by xiaomeng /n/n [e-mail] **//n");
buffer.append("/n///tTHE TIME:" + new Date());
textarea.setText(buffer.toString());
} catch (ClassNotFoundException e) {
showMessage(e.getMessage()
+ "/nClassNotFoundException,please check the classname");
} catch (InstantiationException e) {
showMessage(e.getMessage()
+ "/nInstantiationException,please check the classname");
} catch (IllegalAccessException e) {
showMessage(e.getMessage()
+ "/nIllegalAccessException,please check the classname");
}
}

private String checkClass(String s) {
int a = 0;
String sub = null;
int b = s.lastIndexOf(".");
if (b != 0) {
a = s.length();
sub = s.substring(b + 1, a);
}
return sub;
}

private String checkEmbelLKish(String s) {
int a = 0;
String sub = null;
int b = s.indexOf(".");
if (b != 0) {
a = s.length();
sub = s.substring(0, b - 1);
}
return sub;
}

private void showMessage(String s) {
JOptionPane.showMessageDialog(null, s, "出错啦！",
JOptionPane.OK_OPTION);
}

private class InputClick implements ActionListener {

public void actionPerformed(ActionEvent e) {
if (e.getSource() == cancelbutton) {
dispose();
} else if (e.getSource() == okbutton) {
loading();
dispose();
}
}

}
}

private class FontDialog extends JFrame {
private JLabel fontLabel, fontStyle, fontSize;
private JComboBox fontName, fontStyleName, fontSizeName;
private JButton okButton, cancelButton;

public FontDialog() {
this.setTitle("字体");
init();
addItem();
this.setLayout(new FlowLayout());
this.add(fontLabel);
this.add(fontStyle);
this.add(fontSize);
this.add(fontName);
this.add(fontStyleName);
this.add(fontSizeName);
this.add(okButton);
this.add(cancelButton);
this.setSize(300, 150);
this.setLocation(Share.SCREENWIDTH / 4, Share.SCREENHEIGHT / 4);

}

private void init() {
fontLabel = new JLabel("字体");
fontStyle = new JLabel("字形");
fontSize = new JLabel("大小");
okButton = new JButton("OK");
cancelButton = new JButton("CANCEL");
fontName = new JComboBox();
fontStyleName = new JComboBox();
fontSizeName = new JComboBox();

}

private void addItem() {
// 字体列表
int[] stylename = { Font.BOLD, Font.CENTER_BASELINE,
Font.HANGING_BASELINE, Font.ITALIC,
Font.LAYOUT_LEFT_TO_RIGHT, Font.LAYOUT_LEFT_TO_RIGHT,
Font.LAYOUT_NO_LIMIT_CONTEXT, Font.LAYOUT_NO_START_CONTEXT,
Font.LAYOUT_RIGHT_TO_LEFT, Font.PLAIN, Font.ROMAN_BASELINE,
Font.TRUETYPE_FONT, Font.TYPE1_FONT };
String[] fontname = Toolkit.getDefaultToolkit().getFontList();
for (int i = 0; i < stylename.length; i++) {
fontStyleName.addItem(stylename[i]);
}
for (int i = 0; i < fontname.length; i++) {
fontName.addItem(fontname[i]);
}
for (int i = 0; i < 72; i++) {
fontSizeName.addItem(i);
}
}

public String getName() {
return fontName.getSelectedItem().toString();
}

public int getStyleName() {
return Integer.parseInt(fontStyleName.getSelectedItem().toString());
}

public int getFontSize() {
return Integer.parseInt(fontSizeName.getSelectedItem().toString());
}
}
}