31 lines
796 B
Java
31 lines
796 B
Java
// references/SimplerMutableInteger.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// A trivial wrapper class
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import java.util.*;
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class IntValue2 {
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public int n;
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public IntValue2(int n) { this.n = n; }
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}
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public class SimplerMutableInteger {
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public static void main(String[] args) {
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List<IntValue2> v = new ArrayList<>();
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for(int i = 0; i < 10; i++)
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v.add(new IntValue2(i));
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for(IntValue2 i : v)
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System.out.print(i.n + " ");
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System.out.println();
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for(int i = 0; i < v.size(); i++)
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v.get(i).n = v.get(i).n + 1;
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for(IntValue2 i : v)
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System.out.print(i.n + " ");
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}
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}
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/* Output:
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0 1 2 3 4 5 6 7 8 9
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1 2 3 4 5 6 7 8 9 10
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*/
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