Quadratic Equations Solver

This program can be used to solve problems related to Quadratic Equations

Code

import java.util.Scanner;
class QuadraticCalculator
{
 public static void main(String args[])
 {
  Scanner s=new Scanner(System.in);
  double a,b,c,quad_dis,quad_11,quad_1,quad_21,quad_2;
  
  System.out.println("Enter the value of A");
  a=s.nextDouble();
  System.out.println("\nEnter the value of B");
  b=s.nextDouble();
  System.out.println("\nEnter the value of C");
  c=s.nextDouble();
  quad_dis=b*b-4*a*c;
  quad_11=(-1*b)+(Math.sqrt(quad_dis));
  quad_1=quad_11/(2*a);
  quad_21=(-1*b)-(Math.sqrt(quad_dis));
  quad_2=quad_21/(2*a);
  int choice;

  System.out.println("\n\nWhat do you want to do with the numbers you entered ?\n(1) Calculate Discriminant\n(2) Calculate the values\n(3) Find the nature of roots\n(4) All of the above");

  choice=s.nextInt();
  switch(choice)
  {
   case 1: System.out.println("\nDiscriminant: "+quad_dis);
     break;
   case 2: System.out.println("\nValues are: "+quad_1+", "+quad_2);
     break;
   case 3: if(quad_dis>0)
    {
    System.out.println("\nThe roots are REAL and DISTINCT");
    }
    else if(quad_dis==0)
    {
    System.out.println("\nThe roots are REAL and EQUAL");
    }
    else
    {
    System.out.println("\nThe roots are IMAGINARY");
    }
    break;
   case 4: System.out.println("\nDiscriminant: "+quad_dis);
    System.out.println("\nValues are: "+quad_1+", "+quad_2);
    if(quad_dis>0)
    {
    System.out.println("\nThe roots are REAL and DISTINCT");
    }
    else if(quad_dis==0)
    {
    System.out.println("\nThe roots are REAL and EQUAL");
    }
    else
    {
    System.out.println("\nThe roots are IMAGINARY");
    }
    break;
     
  }
System.out.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nThank You for using this Calculator");

 }
 
}

Output

Link for Download

http://goo.gl/S8OGge