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.ddf;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.function.Supplier;

import org.apache.poi.util.GenericRecordUtil;
import org.apache.poi.util.HexDump;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.LittleEndian;

 * This record is used whenever a escher record is encountered that
 * we do not explicitly support.
public final class UnknownEscherRecord extends EscherRecord {

    //arbitrarily selected; may need to increase
    private static final int DEFAULT_MAX_RECORD_LENGTH = 100_000_000;

    private static final byte[] NO_BYTES = new byte[0];

    /** The data for this record not including the 8 byte header */
    private byte[] thedata = NO_BYTES;
    private final List<EscherRecord> _childRecords = new ArrayList<>();

     * @param length the max record length allowed for UnknownEscherRecord
    public static void setMaxRecordLength(int length) {
        MAX_RECORD_LENGTH = length;

     * @return the max record length allowed for UnknownEscherRecord
    public static int getMaxRecordLength() {
        return MAX_RECORD_LENGTH;

    public UnknownEscherRecord() {}

    public UnknownEscherRecord(UnknownEscherRecord other) {

    public int fillFields(byte[] data, int offset, EscherRecordFactory recordFactory) {
        int bytesRemaining = readHeader( data, offset );
         * Have a check between available bytes and bytesRemaining,
         * take the available length if the bytesRemaining out of range.
        int available = data.length - (offset + 8);
        if (bytesRemaining > available) {
            bytesRemaining = available;

        if (isContainerRecord()) {
            int bytesWritten = 0;
            thedata = new byte[0];
            offset += 8;
            bytesWritten += 8;
            while ( bytesRemaining > 0 ) {
                EscherRecord child = recordFactory.createRecord( data, offset );
                int childBytesWritten = child.fillFields( data, offset, recordFactory );
                bytesWritten += childBytesWritten;
                offset += childBytesWritten;
                bytesRemaining -= childBytesWritten;
                getChildRecords().add( child );
            return bytesWritten;

        if (bytesRemaining < 0) {
            bytesRemaining = 0;

        thedata = IOUtils.safelyClone(data, offset + 8, bytesRemaining, MAX_RECORD_LENGTH);

        return bytesRemaining + 8;

    public int serialize(int offset, byte[] data, EscherSerializationListener listener) {
        listener.beforeRecordSerialize( offset, getRecordId(), this );

        LittleEndian.putShort(data, offset, getOptions());
        LittleEndian.putShort(data, offset+2, getRecordId());
        int remainingBytes = thedata.length;
        for (EscherRecord r : _childRecords) {
            remainingBytes += r.getRecordSize();
        LittleEndian.putInt(data, offset+4, remainingBytes);
        System.arraycopy(thedata, 0, data, offset+8, thedata.length);
        int pos = offset+8+thedata.length;
        for (EscherRecord r : _childRecords) {
            pos += r.serialize(pos, data, listener );

        listener.afterRecordSerialize( pos, getRecordId(), pos - offset, this );
        return pos - offset;

     * @return the data which makes up this record
    public byte[] getData() {
        return thedata;

    public int getRecordSize() {
        return 8 + thedata.length;

    public List<EscherRecord> getChildRecords() {
        return _childRecords;

    public void setChildRecords(List<EscherRecord> childRecords) {
        if (childRecords == _childRecords) {

    public String getRecordName() {
        return "Unknown 0x" + HexDump.toHex(getRecordId());

    public void addChildRecord(EscherRecord childRecord) {
        getChildRecords().add( childRecord );

    public Map<String, Supplier<?>> getGenericProperties() {
        return GenericRecordUtil.getGenericProperties(
            "base", super::getGenericProperties,
            "data", this::getData

    public Enum getGenericRecordType() {
        return EscherRecordTypes.UNKNOWN;

    public UnknownEscherRecord copy() {
        return new UnknownEscherRecord(this);


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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