Static fields

Section 25.1.2 does not allow modifiable static fields, because the EJB tier may be deployed in a distributed environment.

Severity level: 2

Thread synchronization

Section 25.1.2 does not allow beans to use thread synchronization, because the EJB tier may be deployed in a distributed environment.

Severity level: 1

Native code

Section 25.1.2 does not allow native code in EJBs.

Severity level: 1

Field is not serializable

All Enterprise Beans extend the Serializable interface, which dictates that all non-transient fields must be serializable, which is not the case for the mentioned field.

Severity level: 1

EJB uses prohibited class

Section 25.1.2 prohibits the use of the following classes:

• java.io.File
• java.io.FileInputStream
• java.io.FileOutputStream
• java.io.FileReader
• java.io.FileWriter
• java.net.ServerSocket
• java.io.RandomAccessFile
• java.lang.ClassLoader
• java.lang.Thread
• java.lang.ThreadGroup

Severity level: 1

EJB uses forbidden method call

Section 25.1.2 prohibits the use of:

• AWT and Swing for input and output
• java.io for input and output
• java.io.FileOutputStream
• java.io.FileReader
• java.io.FileWriter
• java.net.Socket.setSocketImplFactory
• java.net.ServerSocket
• java.io.RandomAccessFile
• java.lang.ClassLoader
• java.lang.Thread
• java.lang.ThreadGroup

Severity level: 1

Missing default constructor

Sections 7.11.2, 10.6.2, 12.2.2, and 15.7.2 state that the bean must have a public constructor that takes no arguments.

Severity level: 1

Initialization in constructor

Initialization should be performed in setEntityContext or setSessionContext.

Severity level: 1

Wrong class modifiers for session

Section 7.11.2 requires that a session beans class modifier must be public, and must not be final nor abstract.

Severity level: 1

EJB implements finalize()

Sections 7.11.2, 10.6.2, 12.2.2, and 15.7.2 state that an EJB must not implement the finalize() method.

Severity level: 1

Session Bean ejbCreate signature

Sections 7.11.2 states that ejbCreate methods must return void, and must not be final nor static.

Severity level: 1

Use of RemoteException

Sections 7.11.2, 10.6.2, and 12.2.2 recommend to use javax.ejb.EJBEXception instead of RemoteException.

Severity level: 1