title: is there a way to have set constructor in inheritence
body: <p>So i was wondering if there's a way to set a certain thing for the constructor on bluej
  like setting the boolean to true without asking for its parameters</p>
  
  <pre><code>public SaleItem(String description,
                  double weight,
                  boolean canBePickedUp,
                  double cost)
  {
  
      // initialise instance variables
      super(description,weight,(canBePickedUp = true));
      this.cost = cost;
  }
  </code></pre>