How can build Apache POI in IntelliJ IDEA

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I intend to create a Java project what needs DateUtil class from Apache POI. I use IntelliJ Idea 2017.2.5 development editor. I downloaded poi-src-3.17-20170915.tar.gz and poi-bin-3.17-20170915.tar.gz. I think the poi-bin-3.17 contains the jar files from poi-src-3.17 source files so I do not need use ant. Am I right? I would like to build Apache POI according to https://poi.apache.org/howtobuild.html. I added the .jar files from poi-bin-3.17 according to How to add external library in IntelliJ IDEA? But I do not know how I should define all the source folders under src accordingly? I would appreciate your help!

2
java

2 Answers

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If you only need a single class DateUtil, I think you better extract this file and put it direct to your project, include a big jar which has several megabytes just for only class is not a very good.

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Meantime I could solve this issue. I added the extracted poi-bin-3.17 into 

File/Project Structure/Libraries

so I can import org.apache.poi.ss.usermodel.DateUtil in my project and I can use DateUtil.getExcelDate(date) function.