How to rename file in Java – renameTo() method

Earlier we saw how to create, read, write, append to a file in java. In this tutorial we will see how to rename a file in java using renameTo() method.

public boolean renameTo(File dest)

It returns true if the file is renamed successfully else it returns false. It throws NullPointerException – If parameter dest is null.

Complete Example:

import java.io.File;
public class RenameFileJavaDemo
{
    public static void main(String[] args)
    {	
        //Old File
	File oldfile =new File("C:\\myfile.txt");
	//New File
	File newfile =new File("C:\\mynewfile.txt");
	/*renameTo() return boolean value
	 * It return true if rename operation is
	 * successful
	 */
        boolean flag = oldfile.renameTo(newfile);
	if(flag){
	   System.out.println("File renamed successfully");
	}else{
	   System.out.println("Rename operation failed");
	 }
    }
}

Output:

File renamed successfully

Reference:
renameTo() – Javadoc