NetBeans 添加外部库 Vaadin 框架

Question

How can I add external library to Vaadin framework using NetBeans? I can't find libraries folder there. Additionally I want use pi4j library.

I haven't seen it there like in normal Java Application Libraries folder.

Answer 1

Looks like you are using Maven. In that case you have to edit your pom.xml file (you can find it in the Project Files folder in NetBeans).

Google for the Maven coordinates for the library you want to include and add the corresponding dependency section in the dependencies section. For example, to add Log4j, you must add the following in your pom.xml:

...
<dependencies>
    ...
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.5</version>
    </dependency>
    ...
</dependencies>
...

Alternatively, you can right click the Dependencies folder in NetBeans, select Add Dependency... , and add the corresponding Maven coordinates or search for the dependency (keep in mind the Maven Index may be updated the first time you search for a dependency, process that might take some seconds/minutes).