Yes.

I don't understand your question. What is objectA? Which class did you use? Looks like the code above doesn't make any sense. I would expect something like :

Code:

MyObject[] myArrayOfObjects = new MyObject[10];
...
for (int i = 0; i < myArrayOfObjects.length - 1; i++) {
  MyObject objectA = myArrayOfObjects[i];
  MyObject objectB = myArrayOfObjects[i + 1];
  line(objectA.x, objectA.y, objectB.x, objectB.y);
} 

thanks for the help.

i know my question was a bit vague - was trying to be clear without pasting loads of code as my programme is getting quite long so thought easier not to confuse.

anyway i figured it out - to access the variables of an object in an array of composite objects need to:
//loop through the composite objects
for(int i=0; i<compObj.length; i++){    
 if (compObj[i].objA.id != id) {
 //draw line between object B and object A of other composite objects
   line(objB.x, objB.y,compObj[i].objA.position.x, compObj[i].objA.position.y);
   float a = compObj[i].objA.Size;
   float distToBdry = a/2;
   if (dist(objB.x, objB.y,compObj[i].objA.position.x, compObj[i].objA.position.y) < distToBdry) {
       do something;
       }
     }
   }