Useful routines for debugging naming problems

What naming environment is actually getting used?

new InitialContext().getEnvironment();

What is actually bound in that context?

new InitialContext().listBindings(""); // Global namespace
new InitialContext().listBindings("java:/"); // java namespace (same VM only)
new InitialContext().listBindings("java:/comp"); // Component namespace
new InitialContext().listBindings("java:/comp/env"); // ENC
new InitialContext().listBindings("java:/comp/env/ejb"); // EJB refs (if you follow the standard)
new InitialContext().listBindings("some/context");

e.g. List global bindings

for (Enumeration e = new InitialContext().listBindings(""); e.hasMoreElements();)
    System.out.println(e.nextElement());

Is it actually using my jndi.properties? Maybe there is more than one?

ClassLoader loader = Thread.currentThread().getContextClassLoader();
for (Enumeration e = loader.getResources("jndi.properties"); e.hasMoreElements();)
    System.out.println(e.nextElement());

Referenced by: