1. Use modifiers =>  FINAL and STATICstatic final javain this case
    1. final: because a constant will never change, it is CONSTANT!

      constant final java

      as you see, you don’t change the constant because you can use it for other persons, you give Jack a new hair color and you do this with a new constant — Why don’t mention the type the second time for hairJack?

    2. static: it SAVES MEMORY, the constant will only exists in the class you are working in
  2. Name the constant => HOW TO NAME A CONSTANT?name constant java