CIS 260 TestSync.java

Code

/*
    TestSync.java
    CIS 260
    2005-02-16
    David Klick

    Demonstrates how a List and an array of Object references
    can be tied together so changes in the List change the
    associated array.

    Note: This program requires Java 1.5 or later to compile.
*/

import java.util.*;

public class TestSync {
    public static void main(String[] args) {
        Integer[] arr = { new Integer(10), new Integer(5),
            new Integer(3), new Integer(6), new Integer(7), new Integer(18) };
        List<Integer> lst = Arrays.asList(arr);

        // display original array of Integer objects
        System.out.println(Arrays.toString(arr));

        // make change to associated List
        lst.set(2, 77);

        // see change in array
        System.out.println(Arrays.toString(arr));
    }
}
/*
    Sample output:

    [10, 5, 3, 6, 7, 18]
    [10, 5, 77, 6, 7, 18]
*/