java code to rename all files in a folder
// java code to rename all files in a folder import java.io.File; public class RenameAllFilesDemo { public static void main(String[] args) { // folder path String strPath = "D:\\Users\\sachin\\java\\sachinfolder"; // let's create new folder File newfolder = new File(strPath); File[] arrFile = newfolder.listFiles(); for(int a = 0; a < arrFile.length; a++) { if(arrFile[a].isFile()) { File file = new File(strPath + "\\" + arrFile[a].getName()); String strFileName = arrFile[a].getName(); String[] tokens = strFileName.split("\s"); String strNewFile = tokens[1]; System.out.println(strFileName); System.out.print(strNewFile); file.renameTo(new File(strPath + "\" + strNewFile + ".pdf")); } } } }