Method Vector.lastIndexOf(elem,index) fails for elementData[k] == elem where
k== index.

Please check the following Program should return 5 insted returns 2.

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import java.util.Vector;

public class VectorTest {

  public static void main(String[] argv) {

    Vector v = new Vector();
    v.addElement("0");
    v.addElement("1");
    v.addElement("2");
    v.addElement("3");
    v.addElement("4");
    v.addElement("2");
    v.addElement("6");

    System.out.println("v.lastIndexOf(\"2\",5) returns:" + v.lastIndexOf("2",5));
  }
}