Same Accounts problem (Many Ways)
done in Java; similar in JJ

Function to determine if a given account is 
the same as another one in both balance and id.
(same fields does not mean identical objects!)

Recall the definition of Account class:
   bal is a real; id is a String!!
They are compared differently.

// a short version:
public boolean isSameAs (Account a) {
   return ( (bal == a.bal) && (id.equals(a.id) );
}

// a clear version:
public boolean isSameAs (Account a) {
   if( (this.bal == a.bal) &&
       (this.id.equals(a.id) )
      return true;
   else
      return false;
}//end Function isSameAs2

// a clever version
public boolean isSameAs (Account a) {
   boolean result = false;
   if ( bal == a.bal) && (id.equals(a.id))
      result = true;
   return result;
}//end function isSameAs3

// another version, avoids boolean logic
public boolean isSameAs (Account a) {
   if (bal == a.bal)
      if (id.equals(a.id)
         return true;
   return false;
}//end Function isSameAs4

Other solutions proposed:

// a non-class version
public boolean areSame (Account a, Account b) {
   if ((a.bal == b.bal) && (a.id.equals(b.id) )
      return true;
   else
      return false;
}// endFunction areSame

// a non function (routine)
public void outCompare (Account a) {
   if ( ... )
      System.out.println ("same");
   elwe
      System.out.println ("differ");
}//end Routine outCompare