Quadratic equation program in Java

Program: Write a java program that prints all real solutions to the quadratic equation ax²+bx+c=0. Read in a, b, c and use the quadratic formula. or Quadratic Equation Program in JAVA.

Aim: Introduce the java fundamentals, data types, and operators in java.

Quadratic Equation Program in Java

import java.util.*; 

public class Quadratic
{ 

public static void main(String[] args) {  
    int a, b, c;  // coefficients 
    double root1, root2; 
    System.out.println("Enter the coefficients"); 
    Scanner in=new Scanner(System.in); 
    a = in.nextInt(); 
    b = in.nextInt(); 
    c = in.nextInt();  
    // calculate the determinant (b2 - 4ac) 
    double d = b * b - 4 * a * c; 
    System.out.println("Determinant="+d); 

    if (d > 0)  // check if determinant is greater than 0
     {  
    // two real and distinct roots 
    root1 = (-b + Math.sqrt(d)) / (2 * a); 
    root2 = (-b - Math.sqrt(d)) / (2 * a); 
    System.out.println("The roots are real and distinct"); 
    System.out.format("root1 = %.2f and root2 = %.2f", root1, root2);
    }  

    else if (d == 0) // check if determinant is equal to 0 
    {  
    // two real and equal roots 
    // determinant is equal to 0 
    // so -b + 0 == -b 
    root1 = root2 = -b / (2 * a); 
    System.out.println("The roots are real and equal"); 
    System.out.format("root1 = root2 = %.2f \n", root1); 
    }  

    else  { 
        double real = -b / (2 * a); 
        double imaginary = Math.sqrt(-d) / (2 * a); 
        System.out.println("The roots are imaginary"); 
        System.out.format("root1 = %.2f+%.2fi", real, imaginary); 
        System.out.format("\nroot2 = %.2f-%.2fi", real, imaginary); 
       } 
    } 
  }  

Output:-