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Java program to change the size of a Vector collection

Given Vector collection, we have to change the size of it.
Submitted by Nidhi, on May 25, 2022

Problem Solution:

In this program, we will create a Vector collection with integer elements. Then we will change the size of the vector collection using the setSize() method.

Program/Source Code:

The source code to set the size of a Vector collection is given below. The given program is compiled and executed successfully.

// Java program to change the size of a 
// 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.setSize(7);

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

Output:

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

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 the setSize() method to change the size of the Vector collection. After that, we printed the updated Vector collection.

Java Vector Class Programs »


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