java - Frustrating Syntax Issues with passing values into methods -

i needed rewrite java program had completed include class able test using junit4. unfortunately can't point because i'm receiving error. it's simple program ask user 3 numbers, pass values function calculations , should return print statement value back. made work without function , i'm having trouble syntax , understanding can , can't methods.

here is:

import java.util.scanner;  public class main {      public static void main(string[] args) {         scanner kybd = new scanner(system.in);          system.out.println("given ax^2 + bx^2 + c = 0");         system.out.println("please enter 'a', 'b', , 'c' determine if there roots: ");         float numa = kybd.nextfloat();         float numb = kybd.nextfloat();         float numc = kybd.nextfloat();          quadraticanswer(numa, numb, numc);      }      public static void float quadraticanswer (float numa, float numb, float numc){         float discriminant = ((numb*numb)-(4*numa*numc));          if (discriminant < 0){             system.out.println("the equation has no roots!");         }          else if (discriminant ==0) {             float root = (-numb + math.sqrt(discriminant))/(2*numa);             system.out.println("the equation has 1 root: "+ root);         }          else {             float root1 = (-numb + math.sqrt(discriminant))/(2*numa);             float root2 = (-numb - math.sqrt(discriminant))/(2*numa);             system.out.println("the equation has 2 roots: " + root1 + " , " + root2 + ".");         }     }     } 

change invalid syntax of

public static void float quadraticanswer  

to

public static void quadraticanswer  

as not returning anything.

if use ide eclipse highlight such errors