Given the String class and the Character class as shown in the following UML, write a program to perform the following tasks. Read a string from the console. Count the number of each letter 'a' 'z) in the string, ignoring the cases. Display the results to the console. Returns the number of characters in this string. Returns the character at the specified Index from this string. Returns a new string that concatenate this string with string si. Constructs a character object with char value Returns the char value from this object Compares this character with another Returns true if this character equals to another Returns true if the specified character is a digit Returns true if the specified character is a letter Returns true if the character b a letter or a digit Returns true if the character is a lowercase letter Returns true if the character is an uppercase letter Returns the lowercase of the specified character Returns the uppercase of the specified character