Chapter 19, Problem 2RE

Explanation of Solution

Collecting five long words from “ArrayList<String>” without using streams:

//Declare the variable “count”

int count = 0;

//Create an object for ArrayList

ArrayList<String> res = new ArrayList<>();

//Create an object for Iterator

Iterator<String> iter = words.iterator();

//Check the value in the iter and its count less than 5

while (iter.hasNext() && count < 5)

{

    //Declare the string

  String str = iter.next();

//Check whether the length of the string is greater than 10

  if (str.length() > 10)

  {

      //Add the string the res

  res...

Explanation of Solution

Collecting five long words using streams:

resultStream = wordList.stream();

.filter(w -> w.length() > 10)

  .limit(5);

In the above code, the list of words is stored in the “resultStream”. Here, the “filter” method yields a stream of all elements that satisfies the length of the steam greater than “10” and “w” is the parameter variable...