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Java program to check whether a Vector collection contains a specified item or not

Given a Vector collection, we have to check whether a given item exists in it or not.
Submitted by Nidhi, on May 20, 2022

Problem statement

In this program, we will create a Vector collection with a different types of elements. Then we will check whether a vector collection contains a specified item or not using contains() method. The contains() method returns true if an item is contained in vector collection otherwise it returns false.

Java program to check whether a Vector collection contains a specified item or not

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

// Java program to check whether a Vector collection 
// contains a specified item or not

import java.util.*;

public class Main {
  public static void main(String[] args) {
    Vector vec = new Vector();

    vec.add(10);
    vec.add(20.5);
    vec.add(true);
    vec.add("Hello World");

    if (vec.contains(20.5))
      System.out.println("Vector vec contains item '20.5'.");
    else
      System.out.println("Vector vec does not contain item '20.5'.");

    if (vec.contains(20))
      System.out.println("Vector vec contains item '20'.");
    else
      System.out.println("Vector vec does not contain item '20'.");
  }
}

Output

Vector vec contains item '20.5'.
Vector vec does not contain item '20'.

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 a Vector collection vec and add elements to it. Then we checked vector vec contained a specified item or not using contains() method and printed the appropriate message.

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