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Problem Statement: Given 2 String source and target, find the number of occurrences that the String target is present in String source and return the count.



Test Cases:

public static void main(String[] args) {
		System.out.println(countOccurences("My java program jav java. i like java course", "java"));
        System.out.println(countOccurences("aabraakaadaabraa", "aa"));
	}
	
	public static int countOccurences(String sentence, String word) {
		int count = 0;
		int index = 0;
		int length = word.length();
		while(index != -1) {
			index = sentence.indexOf(word, index);
			
			if(index != -1) {
				count++;
				index = index + length;
			}
		}
		return count;
	}