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what is &quot;reentrance &amp;&nbsp;loopback&quot; in EJB instance, and why we say that ? <br />
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i have the following saying: in EJB, bean instance are nonreentrant by default, which means that loopbacks are not allowed.
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what is "reentrance & loopback" in EJB instance, and why we say that ? 

i have the following saying: in EJB, bean instance are nonreentrant by default, which means that loopbacks are not allowed.

reentrance &amp; loopback in EJB instance?

Java application servers that support the Java EE platform and features include JOnAS from Object Web, WildFly (formerly JBoss AS) from JBoss, Geronimo from Apache, TomEE from Apache, Resin Java Application Server from Caucho Technology, Blazix from Desiderata Software, Enhydra Server from Enhydra.org, and GlassFish from Oracle. Commercial Java app servers include WebLogic by Oracle, WebSphere from IBM and the open source JBoss Enterprise Application Platform (JBoss EAP) by Red Hat.

reentrance &amp; loopback in EJB instance?

reentrance & loopback in EJB instance?