为什么我得到Class not found例外 [英] why I am getting Class not found exception

问题描述

我正在使用 DeferredTextImpl 类和eclipse似乎没有抱怨它，但是当我运行我的项目时，我得到运行时异常 ... .DeferredTextImpl的类未找到异常..

I am using DeferredTextImpl Class and eclipse does not seems to complain about it but when I run my project I get run time exception .... Class not found exception for DeferredTextImpl ..

当我搜索类文件时，我在 rt中找到它.jar 哪个肯定应该在类路径上。我还检查了项目属性 - > Java构建路径中的构建路径，并且可以在最底层看到JRE系统库。当我扩展它。我可以看到 rt.jar 。这意味着它在类路径上，对吗？

When I searched for the class file, I found it in rt.jar which should certainly be on the class path. I also checked the build path in project properties->Java build path and could see JRE System Library at the very bottom. when I expanded that. I could see rt.jar. which means it is on the class path, right ?

为什么我收到此错误？

推荐答案

检查运行时的Xerces jar版本与编译时类的版本。确保在运行时有一个Xerces2 jar。我怀疑rt.jar中的类与您的应用程序正在寻找的类相同。

Check the version of your Xerces jar for your runtime versus you compile time classes. Make sure have a Xerces2 jar at runtime. I doubt the the class in the rt.jar is the same class your application is looking for.

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