Moving file or directory from one directory to another

Here we write function to copy file or directory from one place to other.

public static boolean moveFileOrDirectory(String src, String dst){
    File source = new File(src);
    if(!source.exists())
      return false;
    

    File destination = new File(dest);
    if(!destination.exists()){
        System.out.print("Mentioned directory does not exist. 
                          \nDo you want to create a new directory(Y/N)? ");

         String chk = readString();
        if(chk.equals("Y") || chk.equals("y")){
            destination.mkdir();
            return copyDirectory(source, destination);
        }else{
            return false;
        }
    }else //if file or directory already exists, we have to copy and 
//overwrite the already existing one
    {
        System.out.println("Given file or folder name already exists. 
         \nDo you want to replace now?");
        String chk = readString();
        if("Y".equals(chk) ) 
            return copyDirectory(source, destination);
        else return false;
    }
}

 

Now this function makes use of copyDirectory function which can be written like this:

public static boolean copyDirectory(File sourceDir, File destDir) throws 
IOException{

  if(!destDir.exists()){
        destDir.mkdir();
    }

    File[] children = sourceDir.listFiles();
    for(File sourceChild : children){

    String name = sourceChild.getName();
    
    File destChild = new File(destDir, name);

    if(sourceChild.isDirectory()){

        return copyDirectory(sourceChild, destChild);

    }

    else{

        return copyFile(sourceChild, destChild);

        }

    }

}

Now this in turn makes use of copyFile function.

public static void copyFile(File source, File dest) throws IOException{

if(!dest.exists()){

dest.createNewFile();

}

InputStream in = null;

OutputStream out = null;

try{

in = new FileInputStream(source);

out = new FileOutputStream(dest);

byte[] buf = new byte[1024];

int len;

while((len = in.read(buf)) > 0){

out.write(buf, 0, len);

}

}

finally{

in.close();

out.close();

}
return true;

}