public int indexOf(String s)
returns the starting index of the first occurrence of string s;
returns -1 if s was not found.
courseName.indexOf("S")
returns the value 5. Note that indexing starts at 0, as it does
with arrays.
Of course, we can also say
String searchString = "S";
and then
courseName.indexOf(searchString)
Another option is:
public int indexOf(String s, int startIndex)
which begins its search at the specified index.
What's the result of
courseName.indexOf("Struct", 2)
courseName.indexOf("Struct", 8)
courseName.indexOf("s", 2)
courseName.indexOf("s", 6)
Here is a method that searches for the number of occurrences of a
string, word, in another string, text. document.
public int wordCount(String text, String word)
{
int count = 0;
int pos = text.indexOf(word,0);
while (pos >= 0)
{
count++;
pos = text.indexOf(word,pos+word.length());
}
return count;
}
Recall from above that "s" and "S" are different strings.
