Add Two Complex Numbers in Java

Complex numbers are expressed in the form of p + iq where p and q indicates real numbers and i represents an imaginary number. For instance, 8.2 + 5.6i is a complex number, where 8.2 is the real part and 5.6i is the imaginary part. In this article, we will understand how to add two complex numbers in Java.

Example Scenario

Input: complex_num = 15 +i24 and 3 +i7
Output: sum = 18 + i31

Program to Add Complex Numbers in Java

In this example, we are calculating addition of two complex numbers in Java.

import java.util.*;
class ComplexNumbers {
   int my_real_number, my_imaginary_number;
   ComplexNumbers() {}
   ComplexNumbers(int my_real_temp, int my_imaginary_temp){
      my_real_number = my_real_temp;
      my_imaginary_number = my_imaginary_temp;
   }
   ComplexNumbers AddComplexNumbers(ComplexNumbers my_input_1, ComplexNumbers my_input_2){
      ComplexNumbers my_temp = new ComplexNumbers();
      my_temp.my_real_number = my_input_1.my_real_number + my_input_2.my_real_number;
      my_temp.my_imaginary_number = my_input_1.my_imaginary_number +    my_input_2.my_imaginary_number;
      return my_temp;
   }
}
public class MainFunction {
   public static void main(String[] args){
      System.out.println("Required packages have been imported");
      ComplexNumbers my_input_1 = new ComplexNumbers(15, 24);
      System.out.println("The first complex number is defined as : " + my_input_1.my_real_number + " + i" + my_input_1.my_imaginary_number);
      ComplexNumbers my_input_2 = new ComplexNumbers(3, 7);
      System.out.println("The second complex number is defined as : " + my_input_2.my_real_number + " + i" + my_input_2.my_imaginary_number);
      ComplexNumbers my_result = new ComplexNumbers();
      my_result = my_result.AddComplexNumbers(my_input_1, my_input_2);
      System.out.println("The sum of complex number is : " + my_result.my_real_number + " + i"  + my_result.my_imaginary_number);
   }
}

Output

Required packages have been imported
The first complex number is defined as : 15 + i24
The second complex number is defined as : 3 + i7
The sum of complex number is : 18 + i31

Another Approach

Here, the integer has been previously defined, and its value is accessed and displayed on the console.

public class ComplexNumber {
   int real_number, imaginary_number;
   public ComplexNumber(int r, int i){
      this.real_number = r;
      this.imaginary_number = i;
   }
   public void print_complex_number(){
      System.out.print(this.real_number + " +i" + this.imaginary_number);
   }
   public static ComplexNumber add_complex_number(ComplexNumber n1, ComplexNumber n2){
      ComplexNumber my_result = new ComplexNumber(0, 0);
      my_result.real_number = n1.real_number + n2.real_number;
      my_result.imaginary_number = n1.imaginary_number +n2.imaginary_number;
      return my_result;
   }
   public static void main(String arg[]){
      ComplexNumber my_input_1 = new ComplexNumber(15, 24);
      ComplexNumber my_input_2 = new ComplexNumber(3, 7);
      System.out.println("The two complex numbwes are defined as ");
      my_input_1.print_complex_number();
      System.out.print(" and ");
      my_input_2.print_complex_number();
      ComplexNumber my_result = add_complex_number(my_input_1, my_input_2);
      System.out.println("\nThe sum of the two complex numbers is :");
      my_result.print_complex_number();
   }
}

Output

The two complex numbers are defined as
15 +i24 And 3 +i7
The sum of the two complex numbers is :
18 i31