Rename (or move) a directory - A Java Code Example

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This example shows how to rename a directory.
Note that the first parameter (fromDir) must exist, but the second must not.
However, should the second parameter be a subfolder to another directory,
the parent directory must exist.

import java.io.File;

public class FileUtil {

  public void renameDirectory(String fromDir, String toDir) {

    File from = new File(fromDir);

    if (!from.exists() || !from.isDirectory()) {

      System.out.println("Directory does not exist: " + fromDir);
      return;
    }

    File to = new File(toDir);

    //Rename
    if (from.renameTo(to))
      System.out.println("Success!");
    else
      System.out.println("Error");


  }

  public static void main(String[] args) {
    FileUtil fileutil = new FileUtil();
    fileutil.renameDirectory("/temp", "/temp2");
  }
}

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