ConcurrentHashSet vs newSetFromMap

[nimo22]

What is the difference of using this:

org.hornetq.utils.ConcurrentHashSet

{code}
private Set<Object> threadSafe= new ConcurrentHashSet<Object>();
{code}

and this:

java.util.Collections.newSetFromMap

{code}
private Set<Object> threadSafe=  Collections.newSetFromMap(new ConcurrentHashMap<Object, Boolean>());
{code}

[clebert.suconic]

It would be the same...

The code exists since we were on JVM 1.4.

On 2.2, the code still needs to run in JVM 1.5 at the client.. so I would rather keep the code as it is (it's not a big deal anyways).

[clebert.suconic]

nimo stephan wrote:

What is the difference of using this:

org.hornetq.utils.ConcurrentHashSet

private Set<Object> threadSafe= new ConcurrentHashSet<Object>();

and this:

java.util.Collections.newSetFromMap

private Set<Object> threadSafe=  Collections.newSetFromMap(new ConcurrentHashMap<Object, Boolean>());

BTW: thanks for the hint.. it's always nice to learn new tricks! But I don't think we can change it now.