Wednesday 20 February 2013

Moving files in Java

Assignment

Design an algorithm for moving one file, that is copying a file from a source (a directory) to another source, and deleting the original. Consider that folders are files, too.

 

 Step 1: Build a simple working program ([1])

 

import java.io.*;

public class mv{
public static void main(String args[]){
         try{
         // File (or directory) to be moved
         File file = new File("C:\\ProgrameJava\\file.txt");
       
         // Destination directory
         File dir = new File("C:\\ProgrameJava\\myDir");
       
         // Move file to new directory
         boolean success = file.renameTo(new File(dir, file.getName()));
             if (!success) {
             System.out.println("File not moved");
         }
     }
         catch (Exception ioe){
         ioe.printStackTrace();
     }
}
}

Step 2: Add code to check if source and destination exist, and print appropriate messages on the application console

 

Step 3: Give the names of the source and the destination as command line arguments

 

Step 4: Use FileInputStream and FileOutputStream to move the file ([4])

 

Bibliography

  1. http://www.java.happycodings.com/Core_Java/code50.html
  2. http://docs.oracle.com/javase/tutorial/essential/io/move.html
  3. http://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html#move%28java.nio.file.Path,%20java.nio.file.Path,%20java.nio.file.CopyOption...%29
  4. http://myflex.org/yf/java/slides/Unit8.pdf
  5. http://stackoverflow.com/questions/300559/move-copy-file-operations-in-java