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Java program to check whether a Vector collection is empty or not

Given a Vector collection, we have to check whether it is empty or not.
Submitted by Nidhi, on May 23, 2022

Problem Solution:

In this program, we will create two Vector collections. Then we will check whether created collections are empty or not using the isEmpty() method.

Program/Source Code:

The source code to check whether a Vector collection is empty or not is given below. The given program is compiled and executed successfully.

// Java program to check whether a Vector collection 
// is empty or not

import java.util.*;

public class Main {
  public static void main(String[] args) {
    Vector < String > vec1 = new Vector < String > ();
    Vector < String > vec2 = new Vector < String > ();

    vec1.add("CAR");
    vec1.add("BUS");
    vec1.add("BIKE");
    vec1.add("BUS");
    vec1.add("TRUCK");

    if (vec1.isEmpty())
      System.out.println("Vector vec1 is empty collection.");
    else
      System.out.println("Vector vec1 is not empty collection.");

    if (vec2.isEmpty())
      System.out.println("Vector vec2 is empty collection.");
    else
      System.out.println("Vector vec2 is not empty collection.");
  }
}

Output:

Vector vec1 is not empty collection.
Vector vec2 is empty collection.

Explanation:

In the above program, we imported the "java.util.*" package to use the Vector class. Here, we created a public class Main.

The Main class contains a main() method. The main() method is the entry point for the program. And, created Vector collections vec1, vec2. Then we used the isEmpty() method to check created collections are empty or not and printed the appropriate message.

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