Minor Description
For two of the random() methods, these:
public static String random(int count, int start, int end, boolean letters, boolean numbers, char... chars)
public static String random(int count, int start, int end, boolean letters, boolean numbers, char[] chars, Random random)
the javadoc for letters, numbers parameters is
letters - only allow letters?
numbers - only allow numbers?
when it should be like in other random() methods:
letters - if true, generated string may include alphabetic characters
numbers - if true, generated string may include numeric characters
