1// java code to rename all files in a folder
2import java.io.File;
3public class RenameAllFilesDemo
4{
5 public static void main(String[] args)
6 {
7 // folder path
8 String strPath = "D:\\Users\\sachin\\java\\sachinfolder";
9 // let's create new folder
10 File newfolder = new File(strPath);
11 File[] arrFile = newfolder.listFiles();
12 for(int a = 0; a < arrFile.length; a++)
13 {
14 if(arrFile[a].isFile())
15 {
16 File file = new File(strPath + "\\" + arrFile[a].getName());
17 String strFileName = arrFile[a].getName();
18 String[] tokens = strFileName.split("\s");
19 String strNewFile = tokens[1];
20 System.out.println(strFileName);
21 System.out.print(strNewFile);
22 file.renameTo(new File(strPath + "\" + strNewFile + ".pdf"));
23 }
24 }
25 }
26}