Help with filling a if statement

Question

hello everyone i hope someone can help me
if you look at my code below the arraylist contains the number 8. but i want to know how i can use that number 8 inside the if statement (if (i%10 == 1)) where the number 1 is, so that number 1 will change to the number 8.
could someone please help me.
thanks for your time
loftty
hash.put(new Integer(8), st1);
if(hash.containsValue(st1)) {
                         Enumeration e = hash.keys();
                              while (e.hasMoreElements()) {
Object it = e.nextElemenet();
Object it1 = hash.get(it);
if (it1.equals(st1){
arraylist.add(it);
Enumeration e = v.elements();
                    Object o;
                    for(int i = 1;e.hasMoreElements();i++) {
                    o = e.nextElement();
                         if (i%10 == 1){
                    System.out.println(o);

Answer 1

By ArrayList do you mean the hashtable in your code?
Because a hastable is not the same as an arraylist....
For one thing your hashtable is wrong...
The first parameter you pass in a put method is a key, the second is an object...
When you want to get the object from the hashtable you pass it the key.... like so:
hash.put("Str1", new Double(8));
Double l_Double = (Double)hash.get("Str1");With an ArrayList you don't use keys by the way...
Vermelh0