批量更改文件名

import java.io.*;
import java.io.*;

public class FileRename {
    private File dir;

    private String absolute;

    public FileRename(File dir) throws Exception
{
if(dir.isDirectory())
{
this.dir = dir;
dir.getAbsolutePath()
}
else
{
throw new Exception("err dir");
}
}

    public boolean Rename(String filename, int increment) {
        int i = 0;
        String temp[] = dir.list();
        for (String s : temp) {
            File f = new File(absolute + File.pathSeparator + "s");
            if (f.isFile()) {
                f.renameTo(new File(absolute + File.pathSeparator + filename
                        + String.valueOf(i)));
                i = i + increment;
            }
        }
    }

    public static void main(String args[]) throws Exception
{
FileRename fr = new FileRename("c:\windows");
fr.Rename("debug.exe",1);
}
}