Vector equals() Method in Java

The java.util.vector.equals(Object obj) method of Vector class in Java is used verify the equality of an Object with a vector and compare them. The list returns true only if both Vector contains same elements with same order.

Syntax:

first_vector.equals(second_vector)

Parameters: This method accepts a mandatory parameter second_vector which refers to the second Vector to be compared to the first Vector.

Return value: The method returns true if the equality holds and both the objects and vector are equal else it returns false.

Below programs are used to illustrate the working of the java.util.Vector.elements() method:

Program 1:

// Java code to illustrate the equals() method
import java.util.*;

public class Vector_Demo {
    public static void main(String[] args)
    {

        // Creating an empty Vector
        Vector<String> vec_tor1 = new Vector<String>(5);

        // Inserting elements into the table
        vec_tor1.add("Geeks");
        vec_tor1.add("4");
        vec_tor1.add("Geeks");
        vec_tor1.add("Welcomes");
        vec_tor1.add("You");

        // Displaying the Vector
        System.out.println("The Vector is: "
                           + vec_tor1);

        // Creating an empty Vector
        Vector<String> vec_tor2 = new Vector<String>(5);

        // Inserting elements into the table
        vec_tor2.add("Geeks");
        vec_tor2.add("4");
        vec_tor2.add("Geeks");
        vec_tor2.add("Welcomes");
        vec_tor2.add("You");

        // Displaying the Vector
        System.out.println("The Vector is: "
                           + vec_tor2);

        System.out.println("Are both of them equal? "
                           + vec_tor1.equals(vec_tor2));
    }
}

Output:

The Vector is: [Geeks, 4, Geeks, Welcomes, You]
The Vector is: [Geeks, 4, Geeks, Welcomes, You]
Are both of them equal? true

Program 2 :

// Java code to illustrate the equals() method
import java.util.*;

public class Vector_Demo {
    public static void main(String[] args)
    {

        // Creating an empty Vector
        Vector<Integer> vec_tor1 = new Vector<Integer>(5);

        // Inserting elements into the table
        vec_tor1.add(10);
        vec_tor1.add(15);
        vec_tor1.add(20);
        vec_tor1.add(25);
        vec_tor1.add(30);

        // Displaying the Vector
        System.out.println("The Vector is: " + vec_tor1);

        // Creating an empty Vector
        Vector<Integer> vec_tor2 = new Vector<Integer>(6);

        // Inserting elements into the table
        vec_tor2.add(10);
        vec_tor2.add(15);
        vec_tor2.add(20);
        vec_tor2.add(25);
        vec_tor2.add(30);
        vec_tor2.add(40);

        // Displaying the Vector
        System.out.println("The Vector is: " + vec_tor2);

        System.out.println("Are both of them equal? "
                           + vec_tor1.equals(vec_tor2));
    }
}

Output:

The Vector is: [10, 15, 20, 25, 30]
The Vector is: [10, 15, 20, 25, 30, 40]
Are both of them equal? false