myFile.renameTo(new File("/the/new/place/newName.file"));

File#renameTo does that (it can not only rename, but also move between directories, at least on the same file system).

Renames the file denoted by this abstract pathname.

Many aspects of the behavior of this method are inherently platform-dependent: The rename operation might not be able to move a file from one filesystem to another, it might not be atomic, and it might not succeed if a file with the destination abstract pathname already exists. The return value should always be checked to make sure that the rename operation was successful.

If you need a more comprehensive solution (such as wanting to move the file between disks), look at Apache Commons FileUtils#moveFile

You can use file.renameto() for moving and renaming.

Sample -

import java.io.File;

public class MoveFileExample
{
    public static void main(String[] args)
    {
        try{

           File afile =new File("C:\\folderA\\Afile.txt");

           if(afile.renameTo(new File("C:\\folderB\\" + afile.getName()))){
            System.out.println("File is moved successful!");
           }else{
            System.out.println("File is failed to move!");
           }

        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

The File I/O API was changed and improved considerably with Java 7. One of the problems with the legacy (pre Java 7) File API was that:

• The rename method didn't work consistently across platforms

The NIO.2 API (File API introduced with Java 7) way of renaming files is using Files.move:

Files.move(file, newFile, StandardCopyOption.REPLACE_EXISTING);

The section Mapping java.io.File Functionality to java.nio.file in Legacy File I/O Code will help you to replace your old file operations with new ones.

By using org.apache.commons.io.FileUtils class

moveDirectory(File srcDir, File destDir) we can move whole directory