Java Programs[Important]

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. If the discriminant b2-4ac is negative, display a message stating that there are no real solutions.

Program :

import java.io.*; class Quadratic { public static void main(String args[])throws IOException {

double x1,x2,disc,a,b,c;

InputStreamReader obj=new InputStreamReader(System.in); BufferedReader br=new BufferedReader(obj);

System.out.println("enter a,b,c values");

a=Double.parseDouble(br.readLine()); b=Double.parseDouble(br.readLine()); c=Double.parseDouble(br.readLine()); disc=(b*b)-(4*a*c);

if(disc==0) { System.out.println("roots are real and equal "); x1=x2=-b/(2*a);

System.out.println("roots are "+x1+","+x2); }

else if(disc>0) { System.out.println("roots are real and unequal");

x1=(-b+Math.sqrt(disc))/(2*a); x2=(-b+Math.sqrt(disc))/(2*a);

System.out.println("roots are "+x1+","+x2); }

else { System.out.println("roots are imaginary"); } } }