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zer0frequency · Guest

Hi all,

I am working on a conversion code (from C++ to JAVA) - now in C++
there is a Rougwave Hashtable that can create hashtables with the
contains() or equals() method which does lookups based on values....

However in JAVA the hashtable looksup objects based on
Object-Reference, so the following lookup fails in java and works in
C,

(Hashtable containing an Object called MyObject with Key as a simple
object as Integer)

Java version:

Hashtable myHash = new Hashtable();

Integer i = new Integer(1);
Integer j = new Integer(1);
// i & j are same values but different objects in
memory

MyObject myObj = new MyObject();

MyObject tmpObj = null;

// Adding myObj into myHash
myHash.put(i, myObj);

// Now logically tmpObj should get the myObj ref.
tmpObj = myHash.get(j);

// But tmpObj will be null cuz i & j are different
objects...

Now to overcome this problem, I wrote my own methods, which get
Objects from hashtable based on the keyType - i.e. for the key as
Integer, I wrote hash.getUsingInt() - which extracts Enumeration from
the hash, and then compares the keys (Integer's values) to find the
match...

This works, but I am sure it makes the processing slow... (I think?)

Please help if you got any ideas to improve performance !!!!

Mark Thornton · Guest

zer0frequency wrote: