Print java static variable from another class

Question

I would like to print the static variable of another class but I cant for some reason. Here is the error when compiling:

System.out.println(Creature.MAX_Y);
                               ^
  symbol:   variable MAX_Y
  location: class Creature
1 error

Here is the code for the Creature class:

package naturalselection.creature;

import naturalselection.food.Food;
import naturalselection.vector.Vector;
import naturalselection.creature.Target;
import java.util.*;
public class Creature{
  public static short MAX_X = 150;
  public static short MAX_Y = 150;
}

and the main class:

import naturalselection.creature.Creature;
import naturalselection.food.Food;

class Main{
  public static void main(String[] args){
    Creature c1 = new Creature(1, 1);
    System.out.println(Creature.MAX_Y);
  }
}

Here is the directory structure (part of it):

main.java
naturalselection -
+-- creature
    +-- Creature.java

Maybe a namespace/package problem. Please edit your question to include the complete file contents of your .java files. Also show how you compile your files. — Progman
– Progman, Commented Jul 26, 2020 at 18:16
@Progman I added the packages, the .java file for the Creature.java file is 200 lines long... but I've included the .java file for main — Serket
– Serket, Commented Jul 26, 2020 at 18:19
Recompile the naturalselection.creature.Creature class. Also check if you have a different Creature class (or even a Creature.class file somewhere) somewhere which is used instead. You might want to delete all .class files and recompile everything. — Progman
– Progman, Commented Jul 26, 2020 at 18:21

Jamil · Accepted Answer · 2020-07-26 19:01:47Z

1

You need to declare static variable in that class from where you are trying to get variable. public static String variableName = "Value";

answered Jul 26, 2020 at 19:01

Jamil

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1 Comment

user7655213 Over a year ago

No. This is blatantly wrong. You can refer to constants in other classes, and it is a very common design pattern.

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