Java/JNDI LDAP/Connection Pooling

how to enable connection pooling. Use debug option to observe connection usage

   <source lang="java">

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import java.util.Hashtable; import javax.naming.Context; import javax.naming.NamingException; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; /**

* Demonstrates how to enable connection pooling. Use debug option to observe
* connection usage.
* 
* usage: java -Dcom.sun.jndi.ldap.connect.pool.debug=fine UsePool
*/

class UsePool {

 public static void main(String[] args) {
   // Set up environment for creating initial context
   Hashtable<String, Object> env = new Hashtable<String, Object>(11);
   env
       .put(Context.INITIAL_CONTEXT_FACTORY,
           "com.sun.jndi.ldap.LdapCtxFactory");
   env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");
   // Enable connection pooling
   env.put("com.sun.jndi.ldap.connect.pool", "true");
   try {
     // Create one initial context (Get connection from pool)
     DirContext ctx = new InitialDirContext(env);
     System.out.println(ctx.getAttributes("ou=NewHires"));
     // do something useful with ctx
     // Close the context when we"re done
     ctx.close(); // Return connection to pool
     // Create another initial context (Get connection from pool)
     DirContext ctx2 = new InitialDirContext(env);
     System.out.println(ctx2.getAttributes("ou=People"));
     // do something useful with ctx2
     // Close the context when we"re done
     ctx2.close(); // Return connection to pool
   } catch (NamingException e) {
     e.printStackTrace();
   }
 }

}

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