The full name of poi.jar is Apache POI-the Java API for Microsoft Documents. The poi.jar package contains poi.jar-3.8, poi.jar-3.9, poi.jar-3.10. Download and use it now. Software Screenshot 1 File Detailed Explanation The latest released version of POI is 3.10_FINAL. The jar packages protected by this version are: Software Screenshot 2 Many people are confused about which one of POI should be imported with so many Jars. In fact, many times we only use POI to operate Excel. Even just use xls format. Then there is no need to import them all. Please refer to the following for the specific JAR package that should be used: Software screenshot 3 When we only need to use xls format, we only need to import poi-version-yyyymmdd.jar; when we also need to use xlsx format, we also need to import poi-ooxml- version-yyyymmdd.jar; as for poi-ooxml-schemas-version-yyyymmdd.jar, this jar is rarely used; when we need to operate word, ppt, viso, outlook, etc., we need to use poi-scratchpad-version- yyyymmdd.jar
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