Chapter 19.4, Problem 19SC

Explanation of Solution

Statement for the given condition:

The statement to finding the number of distinct words which is equal to 3 is as follows:

int r = list.stream ().filter (w -> w.length () == 3).distinct ().count ();

• Here, “r” is an integer variable
• The “filter” method is used to pick out the words that the user wants.
• The “distinct” method is used to get the unique word from the list...