import java.util.*;

public class Project1 {
    public static void main(String[] args) {
        System.out.println("Enter a,b,c: ");
        Scanner input = new Scanner(System.in);
        double a1 = input.nextDouble();
        double b1 = input.nextDouble();
        double c1 = input.nextDouble();
        Equsolve Equ = new Equsolve(a1, b1, c1);
        Equ.PrintInfo();
        
    }
}

This was main class code.

this one is equation class:

public class Equsolve {
    double a;
    double b;
    double c;
    double x2;
    double x1;
    public Equsolve(double a1, double b1, double c1) {
        a = a1;
        b = b1;
        c = c1;
    }
    public void delta() {
        double delta = (b*b)-(4*a*c);
    }
    public void x1(double delta){
        x1 = ((-b)+(Math.sqrt(delta))/(2*a));
    }
    public void x2(double delta){
        x2 = ((-b)-(Math.sqrt(delta))/(2*a));
    }
    public void PrintInfo(){
        System.out.format("a = %fn", a);
        System.out.format("b = %fn", b);
        System.out.format("c = %fn", c);
        System.out.format("x1 = %fn", x1);
        System.out.format("x2 = %fn", x2);
    }
}

I was trying to create a class which solves quadratic equations.
But the x1 and x2 are always 0!
I even tried to change the value manually but it’s still 0!