Java collection evolution

gistfile1.java

//How it started
Type [] col = getCol();
for(int i = 0;i < col.length;i++){
  Type obj = col[i];
  //Use obj
}

//Enter untyped collections
//This is worse than before, IMO
//since you blindly cast to Type
//At least before, arrays were typed.
List colList = getCol();
for(Iterator itr = colList.getIterator();itr.hasNext();){
  Type obj = (Type)itr.next();
  //Use obj
}

//Enter generic collections
//Angelic songs queue up
List<Type> col = getCol();
for(Type t : col){
  //Use t
}