The randomstringutils of Commons

Import java.util.random;    Import org.apache.commons.lang3.randomstringutils;    public class Randomstringutilsdemo {            private static final Random Random = new Random ();            private static final int count = 4;             private static final int start = 0;         & nbsp;  private static final int end = 3;            private static final String str = "abcd1234";            private static final char[] chars = {' A ', ' B ', ' 1 ', ' 2 ', ' C ', ' d ', ' E ',              ' f ', ' 3 '};& nbsp       public static void Main (string[] args) {         /* & Nbsp;        * 1. Create a random string with a length of count.          * In the Chinese environment is garbled.          */          System.out.println ("random1:" + randomstringutils.random (count));            /*          * 2. Create a random string of length count from the chars of the specified character array.          */          System.out.println ("random2:" + randomstringutils.random (count, chars));            /*          * 3. Create a random string of length count that is combined from the specified string str extract character          */          System.out.println ("RANDOM3:" + randomstringutils.random (count, str));            /*          * 4. Create a random string of length count based on letters and numbers. The value returned by letters for true contains the alphanumeric characters          * Numbers The value returned for true contains numeric characters           */          System.out.println (" RANDOM4: "                  + Randomstringutils.random (count, True, true);           /*           *