How to get random objects from a stream

Question

Lets say I have a list of words and i want to create a method which takes the size of the new list as a parameter and returns the new list. How can i get random words from my original sourceList?

public List<String> createList(int listSize) {
   Random rand = new Random();
   List<String> wordList = sourceWords.
      stream().
      limit(listSize).
      collect(Collectors.toList()); 

   return wordList;
}

So how and where can I use my Random?

Answer 1

I've found a proper solution. Random provides a few methods to return a stream. For example ints(size) which creates a stream of random integers.

public List<String> createList(int listSize)
{
   Random rand = new Random();
   List<String> wordList = 
       rand
           .ints(listSize, 0, sourceWords.size())
           .mapToObj(i -> sourceWords.get(i))
           .collect(Collectors.toList());
   return wordList;
}