STK java卡 同其它智能卡一样，引入开放的STK卡开放平台非常必要。E飞l已在其协议中增加了有关JavaCa记的内容。GSM SIM卡采用lavaC耐API在保证安全的同时提供开放的SIM开发，使得STK应用在不同制造商的sIM卡上运行并得以建立空中管理SIM应用程序(Toolkit applet)下载。在开发过程中，软件开发商可采用开放的开发工具，开发出与Java兼容的SIM卡应用程序。-STK cards with other smart cards, the introduction of open STK cards open platform very necessary. L E fly in their agreement on the increase in the content JavaCa mind. GSM SIMlavaCAPISIMSTKsIMSIM(Toolkit applet) In the development process, software developers use open development tools, developed with the Java compatible SIM card applications.