Java Utility Library

Java Vector - firstElement() Method

The java.util.Vector.firstElement() method returns the first element (element at index = 0) of the vector.

Syntax

public E firstElement()

Here, E is the type of element maintained by the container.

Parameters

No parameter is required.

Return Value

Returns the first element of the vector.

Exception

Throws NoSuchElementException, if the vector is empty.

Example:

In the example below, the java.util.Vector.firstElement() method is used to get the value of first element of the vector.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating a vector
    Vector<Integer> MyVector = new Vector<Integer>();

    //populating vector
    MyVector.addElement(50);
    MyVector.addElement(10);
    MyVector.addElement(300);

    //checking vector
    System.out.println("First Element of Vector is: " + MyVector.firstElement());
  }
}

The output of the above code will be:

First Element of Vector is: 50

❮ Java.util - Vector