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The topics in this chapter detail virtual machine specifics.
A lack of resources condition (such as heap space) which is recoverable shall result in a SystemException with reason code NO_RESOURCE. The factory methods in JCSystem used to create transient arrays throw a SystemException with reason code NO_TRANSIENT_SPACE to indicate lack of transient space.
All other (non-recoverable) virtual machine errors such as stack overflow shall result in a virtual machine error. These conditions shall cause the virtual machine to halt. When such a non-recoverable virtual machine error occurs, an implementation can optionally require the card to be muted or blocked from further use.
The Java Card RE throws a java.lang.SecurityException exception when it detects an attempt to illegally access an object belonging to another applet across the firewall boundary. A java.lang.SecurityException exception may optionally be thrown by a Java Card VM implementation to indicate a violation of fundamental language restrictions, such as attempting to invoke a private method in another class.
For security reasons, the Java Card RE implementation may mute the card instead of throwing the exception object.
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Runtime Environment Specification for the Java Card Platform Specification, 2.2.1 |
Copyright © 2003 Sun Microsystems, Inc. All rights reserved.