How to rename, move or copy files ?

Rename file

File oldfile = new File("oldfile.txt");

File newfile = new File("newfile.txt");

if(oldfile.renameTo(newfile))

  System.out.println("Rename succesful");

else

  System.out.println("Rename failed");

Move file - Rename file but at different location

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

File bFile = new File("C:\\folderB\\" + afile.getName());

if(afile.renameTo(bFile))

  System.out.println("File is moved successful!");

else

  System.out.println("File is failed to move!");

Copy File

InputStream inStream = null;

OutputStream outStream = null;

try{

  File afile = new File("Afile.txt");

  File bfile = new File("Bfile.txt");

  inStream = new FileInputStream(afile);

  outStream = new FileOutputStream(bfile);

  byte[] buffer = new byte[1024];

  int length;

  //copy the file content in bytes

  while ((length = inStream.read(buffer)) > 0){

     outStream.write(buffer, 0, length);

  }

  inStream.close();

  outStream.close();

  System.out.println("File is copied successful!");

}catch(IOException e){

  e.printStackTrace();

}