Java tutorial
import java.util.Collections; import java.util.Vector; public class Main { public static void main(String[] args) { Vector<String> v = new Vector<String>(); v.add("Z"); v.add("B"); v.add("D"); v.add("E"); v.add("F"); Collections.sort(v); System.out.println(v); int index = Collections.binarySearch(v, "D"); System.out.println("Element found at : " + index); } } /*[B, D, E, F, Z] Element found at : 1 */