Error while implementing XSSF example - excel

Question

I want to read large Excel files (.xlsx) with java. Apache has an example how to go this here.
So I just copied the whole class, added the path to my .xlsx file and tried to execute it but I get this error:
Error:(96, 69) java: cannot access org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRst
class file for org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRst not found
This error is triggered in this line in the method endElement():
lastContents = new XSSFRichTextString(sst.getEntryAt(idx)).toString();
I use this dependency for maven:
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
How do I fix this error?

Answer 1

With the help from Gagravarr I was able to fix this issue. I just needed to add the following dependencied to maven:
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>stax</groupId>
<artifactId>stax-api</artifactId>
<version>1.0.1</version>
</dependency>
<dependency>
<groupId>org.apache.xmlbeans</groupId>
<artifactId>xmlbeans</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>