title: is it must to use parameters in setter methods
body: <p>I am trying to write a method to set the length of a rack.</p>
  
  <p>I am not sure if I have to put a length variable as a parameter in the method</p>
  
  <pre><code>public class Rack {
      int racklength;
  
  
      public Rack(int racklength){
          racklength=racklength;
      }
      public int setRackLength(){
          return racklength;
      }
  }
  </code></pre>