Write a program in Java to find and print all the roots of quadratic equation

  

Write a program in JAVA to find and print all the roots of quadratic equation

import java.util.Scanner;

public class QuadEq {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

double a, b, c, val1, val2;

System.out.print("Enter The value of a in ax^2+bx+c : ");

a = sc.nextDouble();

System.out.print("Enter The value of b in ax^2+bx+c : ");

b = sc.nextDouble();

System.out.print("Enter The value of c in ax^2+bx+c : ");

c = sc.nextDouble();

sc.close();

double dis = Math.pow(b, 2) - 4 * a * c;

if (dis == 0) {

val1 = (-b) / (2 * a);

System.out.print("Roots are Real & Equal. X1 = x2 = : " + val1);

} else if (dis > 0) {

val1 = (-b + Math.sqrt(dis)) / (2 * a);

val2 = (-b - Math.sqrt(dis)) / (2 * a);

System.out.print("Roots are Real & Different. X1 = : " + val1 + " & X2 = " + val2);

} else {

val1 = -b / (2 * a);

val2 = (Math.sqrt(-dis)) / (2 * a);

System.out.println("Roots are Complex & Different.");

System.out.println("X1 = " + val1 + " + " + val2 + "i" + "\nX2 = " + val1 + " - " + val2 + "i");

}

}

}

OUTPUT

Enter The value of a in ax^2+bx+c : 1

Enter The value of b in ax^2+bx+c : -4

Enter The value of c in ax^2+bx+c : 6.25

Roots are Complex & Different.

X1 = 2.0 + 1.5i

X2 = 2.0 - 1.5i