Write a java program that has a main method called countHi with signature: public int countHiString str)

In you main method call countHi at least 12 times to test this method with different input values. Use the 9 test cases below plus 3 additional of your choice.

For each test, compare the methods returned value to the expected value and display a message indicating whther or not the method passed the test.

Some of the code below:

/**
	* Return the number of times that the string "hi" appears anywhere in the given string.
	*
	* countHi("abc hi ho") --> 1
	* countHi("ABChi hi") --> 2
	* countHi("hihi") --> 2
	*
	* @param str not null string
	* @return number of times that the string "hi" appears in the given string
	*/
	public static int countHi( String str )
	{
	int hiCount = 0;
	for ( int i = str.indexOf( "hi" ); i != -1; i = str.indexOf( "hi", i + 1 ) )
	{
	hiCount++;
	}
	return hiCount;
	}