如果将jar文件下载到项目中并将其包含在“构建路径”中，该如何将杰克逊类导入Java文件中？

Question

Most resources online tell me add the Maven dependencies, but I haven't found a working description on how I use the Jackson jar file once I've downloaded it into my project.

I'm a beginner in Java. Thank you for your help.

As simple as possible:

How to write an import into a java file to use the jar file from this location?

Answer 1

What I understood by your post is that you are not able to access any class of a library you've imported into your workspace.

Follow mentioned steps, Right click on your project --> Properties --> Java Build Path --> Libraries --> Add External Jar --> Choose jackson-core-2.8.7.jar which you've recently downloaded and that's it.

Now go to your Java Class where you need any class of jackson library and import the class from the library you need to use/extend. Refer screenshot attached below for further reference.

Answer 2

The question was answered in the Answer comments by @shmosel

import com.fasterxml.jackson.core.JsonParser;

The answer by @Pratik Ambani is very useful too.

Also, not just the jackson core has to be imported but also databind and annotations.

The files can be found here: http://repo1.maven.org/maven2/com/fasterxml/jackson/