Find a complete word in a string java

Question

I am writing a piece of code in which i have to find only complete words for example if i have

String str = \"today is tuesday\";

and I\'m

Answer 1

String str = "today is tuesday";

StringTokenizer stringTokenizer = new StringTokenizer(str);

bool exists = false;

while (stringTokenizer.hasMoreTokens()) {
    if (stringTokenizer.nextToken().equals("t")) {
        exists = true;
        break;
    }
}