Why It shows me "???" EVERY TIME?

Task List X 000 Find All Activate... File Edit Source Refactor Navigate Search Project Run Window Help - - -2- 1 - 2 1 -1-* - Package Explorer X module-info.java Homework.java X 1 package muproject; muproject 3 import java.util.Scanner; > JRE System Library [JavaSE-13] src public class Homework { # muproject > Homework.java public static void main(String[] args) { > module-info.java Scanner kbScanner=new Scanner(System.in); double m,c,m2 , 52; System.out.println("Enter the coefficients of the first line: "); m= kbScanner.nextDouble(); C= kbScanner.nextDouble(); System.out.printf("The first line equation is: y = %.1f x + %.1f ", m,c); NNNPPPPPPPPP BOutline x & Glam #muproject Homework s main(String[]): void | | | E F G H B = 6 1:11:0V IEEI pll salos) A Problems @ Javadoc Declaration Console X Homework [Java Application] C:\Program FilesVava\jdk-13.0.2\bin\javaw.exe (r. Enter the coefficients of the first line: 1 2 The first line equation is: y = ??? x +