Only main method please

(Check substring) Write a program that prompts the user to enter two strings and reports whether the second string is a substring of the first string. This program should ignore case.

SAMPLE RUN #1: java HasSubstring

Enter string s1: precocious Enter string s2: pre

pre is a substring of precocious

SAMPLE RUN #2: java HasSubstring

Enter string s1: precocious Enter string s2: Coci

Coci is a substring of precocious