J2EE.9.5 Application Programming Interfaces

Application clients have all the facilities of the Java 2 Platform, Standard Edition (subject to security restrictions), as well as various standard extensions, as described in Chapter J2EE.6, "Application Programming Interface." Each application client executes in its own Java virtual machine. Application clients start execution at the main method of the class specified in the Main-Class attribute in the manifest file of the application client's JAR file (although note that application client container code will typically execute before the application client itself, in order to prepare the environment of the container, install a SecurityManager , initialize the name service client library, etc.).