PLS help. Exract and use a file in rt.jar

Hi all,
On another thread I was told I might be able to do this. I have my rt.jar file (the class for the plugin). I need to able to allow my applet to use the hashmap and arraylist without the overhead of having to load the entire vm from SUN.
I can view the contents and finding arraylist is simple but not HashMap. Any 1 know its location?
Now if I do this I need to be able to package my own jar with them in. How do I define the imports for the java files? Do they need altering from:
import java.util.Hashmap?
Can someone pls help here im at my wits end :-(
Thanks all

Ta but I have jre 1.3 are the files i need in there?
I have lots of collections classes as shown below
contents of rt.jar
java/util/AbstractCollection.class
java/util/AbstractList$1.class
java/util/AbstractList$Itr.class
java/util/AbstractList$ListItr.class
java/util/AbstractList.class
java/util/AbstractMap$1.class
java/util/AbstractMap$2.class
java/util/AbstractMap$3.class
java/util/AbstractMap$4.class
java/util/AbstractMap.class
java/util/AbstractSequentialList.class
java/util/AbstractSet.class
java/util/ArrayList.class
java/util/Arrays$ArrayList.class
java/util/Arrays.class
java/util/BitSet.class
java/util/Calendar.class
java/util/Collection.class
java/util/Collections$1.class
java/util/Collections$2.class
java/util/Collections$3.class
java/util/Collections$4.class
java/util/Collections$5.class
java/util/Collections$6.class
java/util/Collections$CopiesList.class
java/util/Collections$EmptyList.class
java/util/Collections$EmptyMap.class
java/util/Collections$EmptySet.class
java/util/Collections$ReverseComparator.class
java/util/Collections$SingletonList.class
java/util/Collections$SingletonMap$ImmutableEntry.class
java/util/Collections$SingletonMap.class
java/util/Collections$SingletonSet.class
java/util/Collections$SynchronizedCollection.class
java/util/Collections$SynchronizedList.class
java/util/Collections$SynchronizedMap.class
java/util/Collections$SynchronizedSet.class
java/util/Collections$SynchronizedSortedMap.class
java/util/Collections$SynchronizedSortedSet.class
java/util/Collections$UnmodifiableCollection.class
java/util/Collections$UnmodifiableList.class
java/util/Collections$UnmodifiableMap$UnmodifiableEntrySet$UnmodifiableEntry.class
java/util/Collections$UnmodifiableMap$UnmodifiableEntrySet.class
java/util/Collections$UnmodifiableMap.class
java/util/Collections$UnmodifiableSet.class
java/util/Collections$UnmodifiableSortedMap.class
java/util/Collections$UnmodifiableSortedSet.class
java/util/Collections.class
When I create my own jar with the extracted classes will it work in IE?

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