/*
Search an element of Java Vector Example
This Java Example shows how to search an element of java Vector object using
contains, indexOf and lastIndexOf methods.
*/
import java.util.Vector;
public class SearchAnElementInVectorExample {
public static void main(String[] args) {
//create a Vector object
Vector v = new Vector();
//Add elements to Vector
v.add("1");
v.add("2");
v.add("3");
v.add("4");
v.add("5");
v.add("1");
v.add("2");
/*
To check whether the specified element exists in Java Vector use
boolean contains(Object element) method.
It returns true if the Vector contains the specified objct, false
otherwise.
*/
boolean blnFound = v.contains("3");
System.out.println("Does Vector contain 3 ? " + blnFound);
/*
To get an index of specified element in Vector use
int indexOf(Object element) method.
This method returns the index of the specified element in Vector.
It returns -1 if not found.
*/
int index = v.indexOf("5");
if(index == -1)
System.out.println("Vector does not contain 5");
else
System.out.println("Vector contains 5 at index :" + index);
/*
To get last index of specified element in Vector use
int lastIndexOf(Object element) method.
This method returns index of the last occurrence of the
specified element in Vector. It returns -1 if not found.
*/
int lastIndex = v.lastIndexOf("2");
if(lastIndex == -1)
System.out.println("Vector does not contain 2");
else
System.out.println("Last occurrence of 2 in Vector is at index :" + lastIndex);
}
}
/*
Output would be
Does Vector contain 3 ? true
Vector contains 5 at index :4
Last occurrence of 2 in Vector is at index :6
*/
