Main features of Java Smart Card in Mobile Communication

In mobile communication, Java Smart Card (Java card) is used to run Java small applications.Program. The corresponding Java virtual machine must exist on the card. Small applications that comply with the Java card technical specifications can run on the Virtual Machine. Sun proposed the relevant Java card technical specifications. including detailed information on creating Java card virtual machines and application programming interfaces (API) on a smart card. Compared with traditional smart card systems, Java Smart Card platforms have the following features:

1. cross-platform

Currently, most SIM cards support Java card specifications. any Java card applets that complies with the Java card API technical specifications can run in the Java card Runtime Environment (JRE: Java card runtime environment ). developers are allowed to use the same Java card applets to run on smart cards of different vendors. This enables a program to run everywhere, that is, the JVM mechanism is used for cross-platform purposes.

2. convenient application development

For Java smart card applications in mobile communications, developers can develop smart card applications without having to understand complex smart card hardware and smart card-specific technologies, thus greatly reducing development time, reduce development difficulty and cost. In addition, the original Java program developers can write smart card programs. Human resources are fully utilized to better meet the needs of exponential growth of applications and the development of the times.

3. Security

Java smart card is one of the most critical issues in mobile communication. Security involves multiple aspects. The security mode of the Java smart card system has been improved in many aspects. its security policy is jointly implemented by the Java card Virtual Machine fjcvm) and the Java card runtime environment. Considering the application scope and application particularity of smart cards, Java CARDS support data integrity protection to prevent unauthorized access to sensitive data.

4. Multiple Applicability

In a Jaya card running environment, you can run a variety of different applications (applets) with different functions, such as mobile Internet access, mobile securities trading, and mobile games. these applications can come from the same card supplier or different card suppliers, which is an important feature of the new generation of mobile phones.