Java Programming 【replace tool】

常常需要递归的替换文件内容，如最近我想写了个jEdit插件，jEdit提供了一个插件模板，我只要全部替换一下就成了我自己的工程。在linux下，这好办，shell来搞定，但在Windows下或者不熟悉shell就得想点其他办法来办了，EditPlus可以，UE也可以，不过不太方便的是文件名不好替换，以前给自己写过一个小工具来成批改MP3的名字，后来发现用处蛮大，今天又有新要求了，我就写了MiniTool来完成这一MiniCase。没写UI，因为我自己的系统是RHEL5，喜欢命令行来操作。
Here is the running img by Hypersnap 5.
Here is the code. Just there are two Java files.
package com.jonsenelizee.replace;
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.Stack;
public class FormattingPrintWriter extends PrintWriter
{
private static final String NEWLINE = System.getProperty("line.separator", "\r\n");
// Standard tab settings
private static final int[] STD_TABS = { 9, 17, 25, 33, 41, 49, 57, 65, 73, 81 };
private boolean _autoFlush;
private int[] _tabs = STD_TABS;
@SuppressWarnings("unchecked")
private Stack _stack = new Stack();
private int _indent;
private int _pos;
/**
* Returns a string consisting of the specified number of spaces.
*
* @return The requested whitespace string.
*/
private static String spaces(int n)
{
char[] ca = new char[n];
for (int i = 0; i < n; i++)
ca[i] = ' ';
return new String(ca, 0, ca.length);
}
/**
* Constructs a new FormattingPrintWriter, without automatic line
* flushing.
*
* @param out
* A character-output stream.
*/
public FormattingPrintWriter(Writer out)
{
super(out);
}
/**
* Constructs a new FormattingPrintWriter.
*
* @param out
* A character-output stream.
* @param autoFlush
* If <code>true</code>, the println() methods will flush
* the output buffer.
*/
public Formattin