// strings/UsingStringBuilder.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.stream.*;

public class UsingStringBuilder {
 public static String string1() {
 Random rand = new Random(47);
 StringBuilder result = new StringBuilder("[");
 for(int i = 0; i < 25; i++) {
 result.append(rand.nextInt(100));
 result.append(", ");
 }
 result.delete(result.length()-2, result.length());
 result.append("]");
 return result.toString();
 }
 public static String string2() {
 String result = new Random(47)
 .ints(25, 0, 100)
 .mapToObj(Integer::toString)
 .collect(Collectors.joining(", "));
 return "[" + result + "]";
 }
 public static void main(String[] args) {
 System.out.println(string1());
 System.out.println(string2());
 }
}
/* Output:
[58, 55, 93, 61, 61, 29, 68, 0, 22, 7, 88, 28, 51, 89,
9, 78, 98, 61, 20, 58, 16, 40, 11, 22, 4]
[58, 55, 93, 61, 61, 29, 68, 0, 22, 7, 88, 28, 51, 89,
9, 78, 98, 61, 20, 58, 16, 40, 11, 22, 4]
*/