How to generate a random alpha-numeric string (sequence ) in Java

                                                                                          

For generating random alpha-numeric string you can use following Apache class   
  org.apache.commons.lang.RandomStringUtils

 String r = RandomStringUtils.randomAlphanumeric(32); // for 32 random alpha-numeric sequence

similarly, you can get  whatever sequence  you want.
For more details about the org.apache.commons.lang.RandomStringUtils  class visit this link:
http://commons.apache.org/lang/api-2.5/org/apache/commons/lang/RandomStringUtils.html

 

 

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