**Program to solve Simple Quadratic Equation in Java.**

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import java.util.Scanner; public class Quadratic { public static void main(String[] args) { Scanner input = new Scanner(System.in); double a = 0; double b = 0; double c = 0; double discriminant = 0; double d = 0; System.out.print("Enter the value of a : "); a = input.nextDouble(); System.out.print("Enter the value of b : "); b = input.nextDouble(); System.out.print("Enter the value of c : "); c = input.nextDouble(); discriminant = (b * b - 4 * a * c); d = Math.sqrt(discriminant); if (discriminant >= 0.0) { System.out.println("First root of the equation : " +(-b + d) / (2.0*a)); System.out.println("Second root of the equation : " +(-b - d) / (2.0*a)); } else { System.out.println("The roots are not real numbers."); } } }

**Click here to download complete source code**

**Output of the program :**