CIS 260 TestVector.java

Code

/*
    TestVector.java
    CIS 260
    2012-02-06
    David Klick

    Demonstrates the Vector class.
*/

import java.util.Vector;

public class TestVector {
    public static void main(String[] args) {
        Vector<Integer> v = new Vector<Integer>();

        v.add(1);  // same as addElement
        v.add(2);
        v.add(0, 3);
        System.out.println(v);

        if (v.contains(2)) {
            System.out.println("vector contains 2");
        } else {
            System.out.println("vector does not contain 2");
        }
        if (v.contains(4)) {
            System.out.println("vector contains 4");
        } else {
            System.out.println("vector does not contain 4");
        }

        System.out.println("The first element is " + v.firstElement());
        System.out.println("v[1] = " + v.elementAt(1));  // same as get
        System.out.println("The last element is " + v.lastElement());

        v.setElementAt(4, 0);
        v.set(2, 5);
        v.add(2);
        System.out.println(v);

        System.out.println("First 2 at: " + v.indexOf(2));
        System.out.println("Last 2 at: " + v.lastIndexOf(2));
      
        v.removeElement(2);
        v.removeElementAt(0);
        System.out.println(v);

        v.insertElementAt(7, 1);
        System.out.println(v);

        System.out.println("Size of v: " + v.size());
        v.setSize(2);
        System.out.println("Size of v: " + v.size());
        v.clear();
        if (v.isEmpty()) System.out.println("v is now empty");
    }
}
/*
    Sample output:

    [3, 1, 2]
    vector contains 2
    vector does not contain 4
    The first element is 3
    v[1] = 1
    The last element is 2
    [4, 1, 5, 2]
    First 2 at: 3
    Last 2 at: 3
    [1, 5]
    [1, 7, 5]
    Size of v: 3
    Size of v: 2
    v is now empty
*/