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11 Replies Latest reply: Feb 13, 2007 9:57 AM by 807599 RSS

I need to retrieve an Object[] of all keys in java.util.Hashtable

807599 Newbie
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public abstract class ArrayFunctionality {

     * Construct {@link java.lang.Object} array of keys from {@link java.util.Hashtable}
     * @param h {@link java.util.Hashtable}
     * @return array {@link java.lang.String}
     * @throws java.lang.IndexOutOfBoundsException Exception thrown if initial {@link java.lang.Object} array paramater cannot be indexed
    public static Object[] arrayKeys(Hashtable<Object, Object> h) throws IndexOutOfBoundsException {
        Vector<Object> v = new Vector<Object>();
        Enumeration keys = h.keys();
        while (keys.hasMoreElements()) v.add(keys.nextElement());
        return v.toArray();


// HOWEVER, this occurs with Hashtable<String, String> attrs:

if (hasSetHashtable) String[] keyArray = ArrayFunctionality.arrayKeys(attrs);

// DOES NOT COMPILE: ".class expected - not a statement"
I am not understanding why this is occurring, please advise, I'm lost on this one.