// references/SimplerMutableInteger.java

// (c)2016 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://mindviewinc.com/Books/OnJava/ for more book information.

// A trivial wrapper class

import java.util.*;

class IntValue2 {

public int n;

public IntValue2(int n) { this.n = n; }

}

public class SimplerMutableInteger {

public static void main(String[] args) {

List<IntValue2> v = new ArrayList<>();

for(int i = 0; i < 10; i++)

v.add(new IntValue2(i));

for(IntValue2 i : v)

System.out.print(i.n + " ");

System.out.println();

for(int i = 0; i < v.size(); i++)

v.get(i).n = v.get(i).n + 1;

for(IntValue2 i : v)

System.out.print(i.n + " ");

}

}

/* Output:

0 1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9 10

*/