Equal level 2 solution (JAVA)

eqn2.java

import java.util.*;
import javax.swing.*;
import java.lang.Math.*;
import java.text.*;
class Eqn2 {
    public static void Solve(int a, int b, int c) {
        double delta = b*b-(4*a*c);
        if (delta < 0) {
            System.out.println("No solution !");
        }
        if(delta == 0) {
            double x = (-b)/(2*a);
            System.out.println("Root : " + x);
        }
        if (delta > 0) {


        double x1 = (-b + Math.sqrt(delta)) / 2*a;
        double x2 = (-b - Math.sqrt(delta)) / 2*a;
        DecimalFormat df = new DecimalFormat("0.000");
     System.out.println("Root 1: " + df.format(x1));
     System.out.println("Root 2: " + df.format(x2));
        }
}
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        System.out.print("Input a, b, c :");
        int j = scan.nextInt();
        int k = scan.nextInt();
        int l = scan.nextInt();
            Solve(j, k, l);
    }
}