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Java program to create a set of Complex numbers using HashSet collections

Given a HashSet collection, we have to create a set of Complex numbers using it.
Submitted by Nidhi, on May 12, 2022

Problem statement

In this program, we will create a Complex class that contains data members real, and imaginary. Then we will add objects of the Complex class to the HashSet collection. After that, we will print complex numbers.

Java program to create a set of Complex numbers using HashSet collections

The source code to create a set of Complex numbers using HashSet collections is given below. The given program is compiled and executed successfully.

```// Java program to create a set of Complex numbers
// using HashSet collections

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("Complex Number: " + real + " + " + imaginary + "i");
}
}
public class Main {
public static void main(String[] args) {
HashSet < Complex > comp = new HashSet();

System.out.println("Hash Set of Complex numbers: ");
for (Complex c: comp) {
c.printComplex();
}
}
}
```

Output

```Hash Set of Complex numbers:
Complex Number: 10 + 20i
Complex Number: 40 + 50i
Complex Number: 30 + 40i
Complex Number: 20 + 30i
```

Explanation

In the above program, we imported the "java.util.*" package to use the HashSet collection. Here, we created a public class Main and a Complex class. The Complex class contains data members real, and imaginary. The Main class contains a method main().

The main() method is the entry point for the program. Here, we created a set to store complex numbers using the HashSet collection. Then we added complex numbers to created set using add() method. After that, we printed the set elements.