Common errors

The following information describes some common errors that you might encounter when you use the Java programming language on the z/TPF system.

Class not found exception

Problem: When you load new code, an exception occurred because read permissions were not set for a Java™ Archive (JAR) file that is required by a stand-alone application or a z/TPF application manager for Java (JAM).

Solution: Set read permissions on the JAR files when you load code. The application or JAM startup failed. If a JAM startup failed, a message as the following example shows is written to the stderr.log file.


     java.lang.ClassNotFoundException: com.flight.app.FlightApp    
     .at java.lang.Class.forNameImpl(Native Method)                
     .at java.lang.Class.forName(Class.java:304)                   
     .at com.ibm.tpf.Server.startServer(Server.java:170)