Table of Contents

Introduction

Java Card enables secure elements, such as smart cards and other tamper-resistant security chips, to host applications, called applets, which employ Java technology.

Java Card technology offers a secure and interoperable execution platform that can store and update multiple applications on a single resource constrained device, while retaining the highest certification levels and compatibility with standards. Java Card developers can build, test, and deploy applications and services rapidly and securely. This accelerated process reduces development costs, increases product differentiation, and enhances value to customers.

The Java Card Development Kit is a suite of tools for designing implementations of Java Card technology and developing applets based on the Java Card Specifications. It is available as two independent downloads:

  • The Java Card Development Kit Tools are used to convert and verify Java Card applications.
  • The Java Card Development Kit Simulator offers a testing and debugging reference for Java Card applications. It includes a Java Card simulation environment and Eclipse plug-in.

Together, these two downloads provide a complete, stand-alone development environment in which applications written for the Java Card platform can be developed and tested.

These release notes describe the Java Card Development Kit Tools for the Java Card Platform. The Java Card Development Kit Tools convert and verify Java Card applications. You can use the Java Card Development Kit Tools with products based on version 3.2, 3.1, 3.0.5, and 3.0.4 of the Java Card Specification Classic Edition, as a stand-alone, or in conjunction with the Java Card Development Kit Simulator.

What's New

This topic contains the new features and changes in the Java Card Development Kit Tools.

The following are the changes in the Java Card Development Kit Tools:

  • New features
    • [converter] Add ability to convert class files with version up to 54 (instead of 51) allowing to use up to `-release 10` when compiling classes.
    • Refactor logging to use standard Java logger and allow customization and configuration by users.
    • Remove the Apache Commons Logging and ASM third party libraries as they are not used anymore.
    • Upgrade the Apache Commons CLI library to version 1.9.0.
    • The tools can now be run using JDK 8 (instead of JDK 11 previously) or a newer JDK version. Note that the recommended version to use is JDK 17.
  • Issues Fixed
    • [verifier] Fix issue preventing from converting an implementation of the java.lang package with verification enabled.
    • [verifier] Fix issues preventing from using incremental verification for hierarchies with intermediate classes defined in other export files or not exported.
    • [converter] Fix issue preventing from converting an abstract class that does not declare or define all methods from implemented interfaces.
    • [converter] Fix issue preventing from converting classes containing an empty LocalVariableTable.
    • [verifier] Fix issue preventing from verifying a CAP file using classes, defined in an export file format 2.3, implementing interfaces defined in another export file with 2.1.

For a complete list of supported features, refer to the Java Card Development Kit User Guide and Java Card Platform Specification Release Notes.

System Requirements

This product is targeted for use on a PC running the Windows 10 operating system.

The following software must be installed for the Java Card Development Kit Tools to work:

  • Java Development Kit (JDK) – This release has been verified and tested with Oracle JDK 17 (64 bit version) and OpenJDK 17 (64 bit version). Download the JDK software from:

    http://www.oracle.com/technetwork/java/javase/downloads

    Install it according to the instructions on the website.

  • Apache Ant – This release has been verified and tested with Ant 1.9.13. Download and install Ant from:

    http://ant.apache.org

Installation

The Java Card specifications, Development Kit Simulator, and Development Kit Tools must be downloaded and installed individually.

Note:

Download and install the Java Development Kit (JDK) prior to installing the Java Card Development Kit Tools. The tools in this development kit were tested with Oracle JDK 17 (64 bit version) and OpenJDK 17 (64 bit version). You can download and install JDK according to the instructions on the website: http://www.oracle.com/technetwork/java/javase/downloads.

  • See the Downloading the Specification Documents topic of the Java Card Platform Specification Release Notes, for more details on how to download the Java Card Specification bundle.

  • See the Installation topic of the Java Card Platform Development Kit Simulator Release Notes, for more details on how to download and install the Java Card Development Kit Simulator bundle.

  • See the Installation topic of the Java Card Development Kit User Guide, for more details on how to install the Java Card Development Kit Simulator and Java Card Development Kit Tools.

  • The Java Card Development Kit Tools bundle is provided on the Oracle Technology Network download website (https://www.oracle.com/technetwork/java/embedded/javacard/overview/index.html). You must extract the downloaded .zip file to the directory where you have installed the Simulator.

Contents of Java Card Development Kit Tools

This release of the Java Card Development Kit Tools contain development tools that are used to convert and verify CAP files.

The following table describes the files and directories that are installed in the root installation directory (JC_HOME_TOOLS).

Directory/File Description

bin

Contains all shell scripts or batch files for running the tools (such as capdump, converter...).

lib

Contains all Java programming language JAR files required for running tools by using the shell scripts or batch files, provided in the bin directory.

Known Issues

There are no known bugs or issues in this release.

Documentation

The Java Card Documentation web site provides online product documentation for the Java Card Platform.

Document Description

Java Card Development Kit User Guide

This document describes how to use the Java Card Development Kit to develop applications for Java Card Platform v3.2u1. It is available in HTML and PDF formats.

Java Card Platform Specifications.

The following specification documents are available for the Java Card Platform v3.2u1:

  • Java Card Platform Runtime Environment Specification, Classic Edition, Version 3.2 (PDF format)

  • Java Card Platform Virtual Machine Specification, Classic Edition, Version 3.2 (PDF format)

  • Java Card Platform Application Programming Interface, Classic Edition, Version 3.2 (HTML format)

  • Java Card Platform Specification Release Notes, Version 3.2 (HTML and PDF formats)

Product Information

The Java Card Technology website provides useful information about the Java Card product.

Visit the Java Card Technology website to access the most up-to-date information on the following:

  • Product news and reviews
  • Release notes and product documentation

Documentation Accessibility

For information about Oracle's commitment to accessibility, visit the Oracle Accessibility Program website at http://www.oracle.com/pls/topic/lookup?ctx=acc&id=docacc.

Access to Oracle Support

Oracle customer access to and use of Oracle support services will be pursuant to the terms and conditions specified in their Oracle order for the applicable services.