import com.sun.corba.se.spi.activation.ServerAlreadyRegistered; //导入依赖的package包/类
public int registerServer(ServerDef serverDef)
    throws ServerAlreadyRegistered, BadServerDefinition
{
    // verify that the entry is valid
    LegacyServerSocketEndPointInfo endpoint =
        orb.getLegacyServerSocketManager()
            .legacyGetEndpoint(LegacyServerSocketEndPointInfo.BOOT_NAMING);
    int initSvcPort = ((SocketOrChannelAcceptor)endpoint)
        .getServerSocket().getLocalPort();
    ServerTableEntry entry = new ServerTableEntry( wrapper,
        illegalServerId, serverDef, (int) initSvcPort, "", true, debug );

    switch (entry.verify()) {
    case ServerMain.OK:
        break;
    case ServerMain.MAIN_CLASS_NOT_FOUND:
        throw new BadServerDefinition("main class not found.");
    case ServerMain.NO_MAIN_METHOD:
        throw new BadServerDefinition("no main method found.");
    case ServerMain.APPLICATION_ERROR:
        throw new BadServerDefinition("server application error.");
    default:
        throw new BadServerDefinition("unknown Exception.");
    }

    return registerServer(serverDef, illegalServerId);
}