IteratorOps1.java

import java.util.*;
interface Iterator{
    public boolean has_next();
    public Object get_next();
}
class Sequence{
    private SeqIterator _iter =null;
    int[] iArr;
    int size;
    public Sequence(int size_){
        iArr=new int[80];
        size=0;
    }
    public void addTo(int elem){
        iArr[size]=elem;
        size++;
    }
    public Iterator get_Iterator() {
        _iter = new SeqIterator();
        return _iter;
    }
    private class SeqIterator implements Iterator{
        int indx;
        public SeqIterator(){
            indx = -1;
        }
        public boolean has_next() {
            if(indx < size - 1)
                return true;
            return false;
        }
        public Object get_next() {
            return iArr[++indx];
        }
    }
}

public class IteratorOps1{
    public static void main(String[] args) {
        Sequence sObj = new Sequence(5);
        Scanner sc = new Scanner(System.in); 
        for(int i = 0; i < 5; i++) {
            sObj.addTo(sc.nextInt());
        }
        sc.close();
        Iterator i = sObj.get_Iterator();
        while(i.has_next())
            System.out.print(i.get_next() + ", ");
    }
}