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Java program to set an element at the specified index in Vector collection

Given a Vector collection, we have to set an element at the specified index.
Submitted by Nidhi, on May 25, 2022

Problem statement

In this program, we will create a Vector collection with integer elements. Then we will set an element at the specified index in vector collection using the setElementAt() method.

Source Code

The source code to set an element at the specified index in Vector collection is given below. The given program is compiled and executed successfully.

// Java program to set an element at the 
// specified index in Vector collection

import java.util.*;

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

    vec.add(10);
    vec.add(20);
    vec.add(30);
    vec.add(20);
    vec.add(12);

    System.out.println("Vector elements: " + vec);

    vec.setElementAt(50, 2);

    System.out.println("Vector elements: " + vec);
  }
}

Output

Vector elements: [10, 20, 30, 20, 12]
Vector elements: [10, 20, 50, 20, 12]

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 with integer elements. Then we used setElementAt() method to set  item at index 2 in Vector collection. After that, we printed the updated Vector collection.

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