public class CountSubstring { public static int countSubstring(String subStr, String str){ return (str.length() - str.replace(subStr, "").length()) / subStr.length(); } public static void main(String[] args){ System.out.println(countSubstring("th", "the three truths")); System.out.println(countSubstring("abab", "ababababab")); System.out.println(countSubstring("a*b", "abaabba*bbaba*bbab")); } }