Zip password

**This method is used to create a password protected zip file.
* @param dirName of type String indicating the name of the directory to be zipped
* @param zipFileName of type String indicating the name of the zip file to be created
* @param password of type String indicating the password
*/
public static void zipDirWithPassword( String dirName , String zipFileName , String password)
{
if( zipFileName == null )
{
File tempFile = new File(dirName);
zipFileName = tempFile.getAbsoluteFile().getParent() +File.separator+tempFile.getName()+".zip";
}
zipDir(dirName, zipFileName);
String tempZipFileName = new File( dirName ).getAbsoluteFile() .getParent()+File.separator+"tempencrypted.zip";
try
{
AesZipFileEncrypter enc = new AesZipFileEncrypter (tempZipFileName);
enc.addEncrypted( new File(zipFileName), password);
new File(zipFileName).delete();
new File( tempZipFileName ).renameTo( new File (zipFileName));
}
catch (IOException e) 
{
e.printStackTrace();
}
}