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Java program to create a vector to store different types of objects

Java example to create a vector to store different types of objects.
Submitted by Nidhi, on May 18, 2022

Problem Solution:

In this program, we will create an object of the Vector class to store different types of objects. Then we will add objects using add() method. After that, we will access objects and print their values.

Program/Source Code:

The source code to create a vector to store different types of objects is given below. The given program is compiled and executed successfully.

// Java program to create a vector to store 
// different types of objects

import java.util.*;

class Complex {
  int real;
  int imaginary;

  Complex(int r, int i) {
    this.real = r;
    this.imaginary = i;
  }

  void printComplex() {
    System.out.println(real + " + " + imaginary + "i");
  }
}

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

    vec.add(new Complex(10, 11));
    vec.add(new Complex(20, 21));
    vec.add(10);
    vec.add(20.5);
    vec.add(true);

    System.out.println("Vector Elements:");
    for (Object obj: vec) {
      if (obj instanceof Complex)
        ((Complex) obj).printComplex();
      else
        System.out.println(obj + "");
    }
  }
}

Output:

Vector Elements:
10 + 11i
20 + 21i
10
20.5
true

Explanation:

In the above program, we imported the "java.util.*" package to use the Vector class. Here, we created two classes Complex and Main. The Complex class contains two data members real, and imaginary.

The Main class contains a main() method. The main() method is the entry point for the program. And, created an object vec of the Vector class and added the different types of objects using add() method. After that, we access and print the object values.

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