What Is poi-5.2.3.jar?

What Is poi-5.2.3.jar?

✍: FYIcenter.com

poi-5.2.3.jar is one of the JAR files for Apache POI 5.2.3, which provides an API for Microsoft document files of Word, Excel, PowerPoint, and Visio.

poi-5.2.3.jar supports Apache POI components that read and write Microsoft's OLE 2 Compound document format, which is used in early versions of Microsoft Office tools like Word 97, Excel 97, PowerPoint 97, etc.

poi-5.2.3.jar is distributed as part of the poi-bin-5.2.3-20220909.zip download file.

JAR File Size and Download Location:

JAR name: poi-5.2.3.jar
Target JDK version: 9

File name: poi.jar, poi-5.2.3.jar
File size: 2964641 bytes
Release date: 09-09-2022
Download: Apache POI Website

Here are Java Source Code files for poi-5.2.3.jar:


/* ====================================================================
   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at


   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   See the License for the specific language governing permissions and
   limitations under the License.
==================================================================== */
package org.apache.poi.ss.formula.functions;

import java.time.LocalDate;
import java.time.temporal.ChronoUnit;
import java.util.Date;

import org.apache.poi.ss.formula.OperationEvaluationContext;
import org.apache.poi.ss.formula.eval.ErrorEval;
import org.apache.poi.ss.formula.eval.EvaluationException;
import org.apache.poi.ss.formula.eval.NumberEval;
import org.apache.poi.ss.formula.eval.OperandResolver;
import org.apache.poi.ss.formula.eval.ValueEval;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.util.DateParser;
import org.apache.poi.util.LocaleUtil;

 * <p>Calculates the number of days between two dates based on a real year,
 * which is used in some accounting calculations.</p>
 * <p> 
 * {@code DAYS(end_date,start_date)}
 * </p>
 * <ul>
 * <li>Start_date, end_date (required):<br>
 * The two dates between which you want to know the number of days.<br>
 * If start_date occurs after end_date, the DAYS function returns a negative number.</li>
 * </ul>
 * @see <a href="https://support.office.com/en-us/article/DAYS-function-57740535-D549-4395-8728-0F07BFF0B9DF">DAYS function - Microsoft Office</a>
public class Days implements FreeRefFunction {

    public static final Days instance = new Days();

    private Days() {}

    public ValueEval evaluate(ValueEval[] args, OperationEvaluationContext ec) {
        if (args.length != 2) {
            return ErrorEval.VALUE_INVALID;
        return evaluate(ec.getRowIndex(), ec.getColumnIndex(), args[0], args[1]);

    private ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1) {
        double result;
        try {
            LocalDate d0 = getDate(arg0, srcRowIndex, srcColumnIndex);
            LocalDate d1 = getDate(arg1, srcRowIndex, srcColumnIndex);
            result = evaluate(d0, d1);
        } catch (EvaluationException e) {
            return e.getErrorEval();
        return new NumberEval(result);

    private static double evaluate(LocalDate endDate, LocalDate startDate) {
        return ChronoUnit.DAYS.between(startDate, endDate);

    static LocalDate getDate(ValueEval eval, int srcRowIndex, int srcColumnIndex) throws EvaluationException {
        ValueEval ve = OperandResolver.getSingleValue(eval, srcRowIndex, srcColumnIndex);
        try {
            double d0 = NumericFunction.singleOperandEvaluate(ve, srcRowIndex, srcColumnIndex);
            return getDate(d0);
        } catch (Exception e) {
            String strText1 = OperandResolver.coerceValueToString(ve);
            return DateParser.parseLocalDate(strText1);

    private static LocalDate getDate(double date) {
        Date d = DateUtil.getJavaDate(date, false);
        return d.toInstant()


Or download all of them as a single archive file:

File name: poi-5.2.3-src.zip
File size: 2479830 bytes
Release date: 2022-09-09


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