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java代码格式软件

作者：swings 来源：赛迪网技术社区 2007年12月1日

关键字：格式 java

出于自己的需要,最近用java编写了一个java代码的格式化软件,如下图:

格式化前:

格式化后:

<code>
/*
* Copyright (c) 2006, Cao Kai. All rights reserved.
*
* This software is distributable for personal studying. See the
* terms of the license in the documentation provided with this software.
*/

package com.caokai.jscf.swing;

import javax.swing.*;
import java.awt.*;
/**
* JSCFArea
*
* @author <a href="mailto:gcyx-0222163.com">Rackery</a>
* @version $Revision: 1.6 $
*/

public class JSCFArea extends JTextArea
{
private static JSCFArea instance;

private JSCFArea()
{
}

public static JSCFArea getSingleInstance(){
if (instance == null){
instance = new JSCFArea();
}
return instance;
}

public void setup()
{
instance.setFont(new Font("Monospaced",Font.PLAIN,14));
LookAndFeel.installColorsAndFont(instance,"Label.background","Label.foreground","TextArea.font");
instance.setForeground(Color.blue);
instance.setBorder(BorderFactory.createEtchedBorder());
instance.setLineWrap(true);
instance.setWrapStyleWord(true);
}
}
</code>

/*
* Copyright (c) 2006, Cao Kai. All rights reserved.
*
* This software is distributable for personal studying. See the
* terms of the license in the documentation provided with this software.
*/

package com.caokai.jscf.swing;

import com.caokai.jscf.swing.*;

/**
* JavaFormatterGUI
*
* @author <a href="mailto:gcyx-0222163.com">Rackery</a>
* @version $Revision: 1.6 $
*/

public class JSCFMainFrame
{
public static void main(String[] args)
{
JavaFormatterGUI JFGUI = new JavaFormatterGUI();
JFGUI.setVisible(true);
}

/**
* Method testMethod
*
*
*/
public static void testMethod() {
// TODO: Add your code here
}
}

/*
* Copyright (c) 2006, Cao Kai. All rights reserved.
*
* This software is distributable for personal studying. See the
* terms of the license in the documentation provided with this software.
*/

package com.caokai.jscf.swing;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.*;

import com.caokai.jscf.utilities.*;
import com.caokai.jscf.resources.*;
/**
* JavaFormatterGUI
*
* @author <a href="mailto:gcyx-0222163.com">Rackery</a>
* @version $Revision: 1.6 $
*/

public class JavaFormatterGUI extends JFrame
{
private Configurations config;

private JMenu fileMenu = new JMenu(),
editMenu = new JMenu(),
setMenu = new JMenu(),
aboutMenu = new JMenu(),
language = new JMenu();

private JMenuItem openItem = new JMenuItem(),
saveItem = new JMenuItem(),
copyItem = new JMenuItem(),
cutItem = new JMenuItem(),
pasteItem = new JMenuItem(),
chinese = new JMenuItem(),
japanese = new JMenuItem(),
english = new JMenuItem(),
aboutItem = new JMenuItem();

private JMenuBar bar;

private JSCFArea target;
private ControlPanel control;

private File currentFile = null;

private JFileChooser chooser = new JFileChooser();

private final int PRDEFINED_CHINESE = 0;
private final int PRDEFINED_JAPANESE = 2;
private final int PRDEFINED_ENGLISH = 1;

public JavaFormatterGUI()
{
super("JavaFormatter");
initializeConfig("resources/build/jscf_cn.properties");
setMenuItems();
registerActions();
installMenus();
setJMenuBar(bar);

target = JSCFArea.getSingleInstance();
target.setup();
control = new ControlPanel(target);
getContentPane().add(control,"South");
getContentPane().add(new JScrollPane(target),"Center");
setSize(600,680);
centerFrame();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public void initializeConfig(String file)
{
try
{
config = new Configurations(file);
}
catch(ConfigurationsException ce)
{
ce.printStackTrace();
}
}

public void installMenus()
{
fileMenu.add(openItem);
fileMenu.add(saveItem);

editMenu.add(copyItem);
editMenu.add(cutItem);
editMenu.add(pasteItem);

language.add(chinese);
language.add(english);
language.add(japanese);

aboutMenu.add(aboutItem);
setMenu.add(language);

bar = new JMenuBar();
bar.add(fileMenu);
bar.add(editMenu);
bar.add(setMenu);
bar.add(aboutMenu);
}

public void setMenuItems()
{
fileMenu.setText(config.getValue("file.label"));
editMenu.setText(config.getValue("edit.label"));
setMenu.setText(config.getValue("set.label"));
aboutMenu.setText(config.getValue("about.label"));
language.setText(config.getValue("language.label"));

openItem.setText(config.getValue("open.label"));
saveItem.setText(config.getValue("save.label"));
copyItem.setText(config.getValue("copy.label"));
cutItem.setText(config.getValue("cut.label"));
pasteItem.setText(config.getValue("paste.label"));

aboutItem.setText(config.getValue("about.label"));

chinese.setText(config.getValue("chinese.label"));
japanese.setText(config.getValue("japanese.label"));
english.setText(config.getValue("english.label"));
}

public void registerActions()
{
LanguageListener listener = new LanguageListener();
chinese.addActionListener(listener);
japanese.addActionListener(listener);
english.addActionListener(listener);

OpenFileListener openListener = new OpenFileListener();
openItem.addActionListener(openListener);

SaveFileListener saveListener = new SaveFileListener();
saveItem.addActionListener(saveListener);

aboutItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
AboutDialog ad = new AboutDialog(JavaFormatterGUI.this,config.getValue("register.name"));
ad.setVisible(true);
}
});

copyItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
target.copy();
}
});

cutItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
target.cut();
}
});

pasteItem.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
target.paste();
}
});
}

class LanguageListener implements ActionListener
{
public void actionPerformed(ActionEvent ae)
{
Object obj = ae.getSource();
JMenuItem item = null;

if(obj instanceof JMenuItem)
{
item = (JMenuItem)obj;
}
if(item == chinese)
{
changeLanguage(PRDEFINED_CHINESE);
}
else if(item == english)
{
changeLanguage(PRDEFINED_ENGLISH);
}
else if(item == japanese)
{
changeLanguage(PRDEFINED_JAPANESE);
}
}
}

class OpenFileListener implements ActionListener
{
public void actionPerformed(ActionEvent ae)
{
File file = null;
FileReader fr = null;
String content = "";
int value = chooser.showOpenDialog(JavaFormatterGUI.this);
if(value == JFileChooser.APPROVE_OPTION &&
chooser.getSelectedFile() != null)
{
file = chooser.getSelectedFile();
try
{
fr = new FileReader(file);
}
catch(FileNotFoundException fnfe)
{
JOptionPane.showMessageDialog(null,"没有找到文件!可能已经被删除!");
}
int readbyte;
try
{
while( (readbyte = fr.read()) != -1)
{
target.append(String.valueOf((char)readbyte));
chooser.setCurrentDirectory(file.getParentFile());
currentFile = file;
}
fr.close();
}
catch(IOException ioe){ }
}
}
}

class SaveFileListener implements ActionListener
{
public void actionPerformed(ActionEvent ae)
{
File file = null;
PrintWriter fileOut;
int value = chooser.showSaveDialog(JavaFormatterGUI.this);
if(value == JFileChooser.APPROVE_OPTION &&
chooser.getSelectedFile() != null)
{
file = chooser.getSelectedFile();
}

if(file.exists()){
int response = JOptionPane.showConfirmDialog(null,"该文件已经存在! 是否替换当前文件 !","确认选择",JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE);
if(response==JOptionPane.YES_OPTION){
file.delete();
try{
fileOut = new PrintWriter(new FileWriter(file));
fileOut.println(target.getText());
fileOut.close();
}
catch(IOException e2){ }
}
else
{
return;
}
}

else
{
try
{
fileOut = new PrintWriter( new FileWriter(file));
fileOut.println(target.getText());
fileOut.close();
}
catch(IOException e2){ }
}
}
}

class ControlPanel extends JPanel
{
JSCFArea target;
JButton formatButton;
JavaCodeFormatter formatter;

public ControlPanel(JSCFArea target)
{
this.target = target;
formatter = JavaCodeFormatter.getSingletonInstance();
formatButton = new JButton();
decorateButton();
add(formatButton);
}

public void decorateButton()
{
formatButton.setIcon(new ImageIcon("resources/icons/encode.gif"));
formatButton.setRolloverIcon(new ImageIcon("resources/icons/rollover.gif"));
formatButton.setText(config.getValue("formatButton.label"));
formatButton.setBorder(BorderFactory.createEmptyBorder());
formatButton.setHorizontalTextPosition(JButton.CENTER);
formatButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
try
{
formatter.format(target.getText());
}
catch(FormatException fe)
{
fe.printStackTrace();
}
target.setText(formatter.getFormattedCode());
}
});

formatButton.addMouseListener(new MouseAdapter(){
public void mousePressed(MouseEvent me){
formatButton.setIcon(new ImageIcon("resources/icons/encodes.gif"));
}
public void mouseReleased(MouseEvent me1){
formatButton.setIcon(new ImageIcon("resources/icons/encode.gif"));
}
});
}
}

public void changeLanguage(int type)
{
switch(type)
{
case 0: initializeConfig("resources/build/jscf_cn.properties");
setMenuItems();
control.formatButton.setText(config.getValue("formatButton.label"));
break;
case 1: initializeConfig("resources/build/jscf_en.properties");
setMenuItems();
control.formatButton.setText(config.getValue("formatButton.label"));
break;
case 2: initializeConfig("resources/build/jscf_jp.properties");
setMenuItems();
control.formatButton.setText(config.getValue("formatButton.label"));
break;
default:break;
}
}

public void centerFrame()
{
Toolkit toolkit = Toolkit.getDefaultToolkit();
Dimension dim = toolkit.getScreenSize();
int screenWidth = dim.width,
screenHeight = dim.height,
width = getWidth(),
height = getHeight();
setLocation((screenWidth - width)/2,(screenHeight - height)/2);
}
}

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