Java program to prints all real solutions to the quadratic equation ax2+bx+c = 0

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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"); } } }