为什么Eclipse没有看到库的.jar文件? [英] Why Eclipse does not see .jar file of a library?
问题描述
我有一个java项目,其中有Referenced Libraries。在Referenced Libraries中我有一个我使用的库的.jar文件(我只使用一个外部库)。
I have a java project in which I have "Referenced Libraries". In the "Referenced Libraries" I have a .jar file of a library that I use (I use only one external library).
当我尝试运行 - >运行我有一个NullPointerException的代码。根据我以前的经验,我知道它(非常可能),因为我的代码没有看到库。
When I try to "Run -> Run" the code I have a NullPointerException. From my previous experience I know that it it (very likely) because my code does not see the library.
我刚刚开始使用Eclipse,它可能是我没有以正确方式连接库。我应该使用一些选项或其他操作来强制Eclipse查看库的.jar文件吗?
I just started to use Eclipse and it can be the I do not "connect" libraries in a correct way. Should I use some options or additional action to force Eclipse to see the .jar file of the library?
已添加:
通过右键单击库我得到一个下拉菜单,其中我看到构建路径。我需要在那里做点什么吗?
By the right click on the library I get a drop-down menu in which I see "Build Path". My be I need to do something there?
推荐答案
你试过这个吗?
http:/ /www.wikihow.com/Add-JARs-to-Project-Build-Paths-in-Eclipse-%28Java%29
添加库到你的构建路径:]
Add the library's to your build path :]
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