class X
{
    int i;
    X(int i) { this.i = i; }
    String toString() { return ""+i; }
}

class Collector implements Iterable {
    ArrayList internal = new ArrayList();
    Iterator iterator() { return internal.iterator(); }
    void add(X x) { internal.add(x); }
    X get(int pos) { return (X) internal.get(pos); }
}

void setup()
{
    int[] iarray = {1,2,3,4,5,6};
    for(int i: iarray) { println("int: "+i); }

    String[] sarray = {"A","B","C","D","E"};
    for(String s: sarray) { println("string: "+s); }

    X[] xarray = {new X(1), new X(2), new X(3), new X(4)};
    for(X x: xarray) { println("X: "+x.i); }

    ArrayList list = new ArrayList();
    list.add("a");
    list.add(new X(4));
    for(Object o: list) { println("arraylist: "+o); }

    Collector col = new Collector();
    col.add(new X(1));
    col.add(new X(3));
    col.add(new X(5));
    col.add(new X(7));
    for(Object x: col) { println("collector: "+x); }
}