// streams/Generator.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

public class Generator implements Supplier<String> {
 Random rand = new Random(47);
 char[] letters =
 "ABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray();
 public String get() {
 return "" + letters[rand.nextInt(letters.length)];
 }
 public static void main(String[] args) {
 String word = Stream.generate(new Generator())
 .limit(30)
 .collect(Collectors.joining());
 System.out.println(word);
 }
}
/* Output:
YNZBRNYGCFOWZNTCQRGSEGZMMJMROE
*/