In Case someone else needs this. Object from Bugzilla is first typecasted to a HashMap type. Each Keyset of HashMap itself is an object that contains the array of an object where in each object is again a Hashmap. Quite Complex.
HashMap bugs = (HashMap)bugzillaObject;
for( Object key : bugs.keySet() )
{
Object value = bugs.get( key );
Object[] valueArray = (Object[])value;
for( Object v : valueArray )
{
HashMap L = (HashMap)v;
for( Object key1 : L.keySet() )
System.out.println( "Key " + "= "+key1 + ", value " + "= "+ L.get(key1) );
}
}