Upgrade the Java built-in class Random by using the inheritance concept so that the users can use the methods in the Random class and the following new methods.
nextInt(int low, int high) // inclusive low and high
nextEven(int low, int high) // inclusive low and high
nextOdd(int low, int high) // inclusive low and high
nextChar () // any capital character
nextChar (char low, char high) // nextChar(C, H) returns one of C, D, E, F, G, H
// nextChar(X, C) returns one of X, Y, Z, A, B, C
nextSpecialChar() // return any special character
