Question

A very simple Vector in Java that produces the output that is somewhat difficult to follow. The code snippet is as show below.

package main;

import java.util.Vector;

final public class Main
{
    public static void main(String[] args)
    {        
        Vector<String> r = new Vector<String>();
        r.addElement("O");
        r.addElement("Y");
        r.insertElementAt("A",0);
        r.addElement("B");
        r.addElement("F");
        r.addElement("I");
        r.addElement("X");
        r.removeElement("F");
        r.insertElementAt("G",3);

        System.out.println(r);
    }
}

---

The above simple Java code produces the output that is different than it actually appears to be. The actual output the above code produces is surprisingly, [A, O, Y, G, B, I, X]. Actually, it contains 9 elements. The output however, contains only 7 elements. How?

Answer 1

Did you notice that one of them was removeElement?