Generate Random String with Groovy

Groovy makes really easy to generate random string sequence, here is the code snippet for random string generator:

def length = 16 // the size of the random string

def pool = [‘a‘..’z‘, ‘A‘..’Z‘, 0..9, ‘-‘].flatten() // generating pool

Random random = new Random(System.currentTimeMillis())

// the loop should be from 0 to length – 1, then the char length would be length

def randomChars = (0..length –1).collect { pool[random.nextInt(pool.size())] }

def randomString = randomChars.join()