Java Rename File,Java Rename a File,Rename File Java,Renameto Example Java

Rename the File or Directory in Java

Introduction

In this section, you will see that how a file or directory is renamed. This program illustrates you the procedure of doing so. Through this program you can easily rename any type of the file or directory. If you mention the directory (path) with the new file or directory name to rename the old file or directory which has to be renamed then the file or directory will be moved from it's own directory to the specified new directory otherwise file or directory will be moved from it's own directory to the default directory where your program has been running. This program also tells you about the availability of the specified file or directory which has to be renamed.

The method renameTo(new_file_instance) can be used to rename the appropriate file or directory. Method renameTo() renames the specified file or directory and returns a boolean value (true or false). Syntax of the renameTo() method used in this program :

oldfile.renameTo(newfile)

oldfile : oldfile is the created instance of the File class for holding the specified file or directory name which has to be renamed in the file format.
newfile : newfile is also the instance of File class, which is the new name of file or directory

There are no any typical logic has been used in this program. Simply this program first reads the file or directory name which has to be renamed and then check whether the specified file or directory exists or not. If the specified file or directory exists then the program renames that file or directory into the name specified as parameter to the renameTo() method.

Here is the code of the program :


import java.io.*;

public class RenameFileOrDir{ public static void main(String[] args) throws IOException{ BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); System.out.print("Please enter the file or directory name which has to be Renamed : "); String old_name = in.readLine(); File oldfile = new File(old_name); if(!oldfile.exists()) { System.out.println("File or directory does not exist."); System.exit(0); } System.out.print("please enter the new file or directory name : "); String new_name = in.readLine(); File newfile = new File(new_name); System.out.println("Old File or directory name : "+ oldfile); System.out.println("New File or directory name : "+ newfile); boolean Rename = oldfile.renameTo(newfile);

if(!Rename) { System.out.println("File or directory does not rename successfully."); System.exit(0); } else { System.out.println("File or directory rename is successfully."); } } }

Current Comments

5 comments so far (post your own) View All Comments Latest 10 Comments:

when i move file from dir to another dir the boolean variabl is false

my problem

obj="c:\Bank System\Bank acounts\Commercial Acount\1001.dat"
String desPath="c:\\Bank System\\Bank acounts\\Commercial Acount\\Specila\\";
File speciDir=new File(desPath);
speciDir.mkdir();
String sourcePath=String.valueOf(obj);
File movedFile=new File(sourcePath);
System.out.println(String.valueOf(obj));
if(movedFile.isFile()){
boolean success = movedFile.renameTo(new File(speciDir, movedFile.getName()));
if(!success){
System.out.println("not moved");
}
alwayes apear not moved
please replay for me in the nearest time
thanks for cooperation

Posted by ahmed on Saturday, 12.13.08 @ 17:29pm | #82727

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I am embedded software developer for ASML in Wilton, Connecticut. This example was very helpful.

Ed Chen
Connecticut, USA

Posted by Ed Chen on Saturday, 03.1.08 @ 21:51pm | #50877

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Hi
This topics having some error so you please help how it will work

Posted by palani on Wednesday, 08.29.07 @ 22:16pm | #24444

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The program that you have specified is not properly executed under windows, i have tried most of the program like you you have mention all are not able to rename the file ...... can you specify any alternative to rename the file