Setup: Maven, Gradle and Eclipse

Maven Dependency

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.5</version>
</dependency>

Gradle Dependency

implementation 'org.apache.poi:poi-ooxml:5.2.5'

Without a Build Tool (Eclipse)

Download the POI binary distribution, unzip it, then Project → Properties → Java Build Path → Libraries → Add External JARs and select poi-*.jar, poi-ooxml-*.jar plus everything under ooxml-lib/ and lib/.

Version Alignment

Keep poi, poi-ooxml (and poi-ooxml-lite, if used) on the same version. Mixing 5.x with 4.x/3.x is the #1 cause of NoSuchMethodError at runtime.