【摘要】 本文主要介绍基于AUTOCAD二次开发的工程制图习题系统中JAVA技术的应用,主要涉及到JAVA对非JAVA代码(主要是C/C++代码)的调用,以及在客户端实现多种功能时存在的安全策略问题。目前,JAVA对非JAVA代码的调用有JNI等几种方法,本文重点阐述通过JNI方法调用C++代码的基本模型,以及利用APPLET在客户端实现所需功能时的数字签名问题。更多还原

【Abstract】 Thispaper mainly introduc esthe application of JAVA in engineering exercise which isbased on the seconda ry devel-opment of AUTOCAD.It comesdown toJAVA code transferring non-JAVA cod e(C/C++code)and security policy in client which will realize many functions.At p resent,there are some methodsin JAVA transferring non-JAVA code such asJNI.Thi spaper emphasizesthe base model of JAVA transferring C++code by JNI and the pr oblem of digital signature when AP-PLET isused in client torealize necessary function.更多还原