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.hssf.record.cont;

import org.apache.poi.hssf.record.RecordInputStream;
import org.apache.poi.util.DelayableLittleEndianOutput;
import org.apache.poi.util.LittleEndianByteArrayOutputStream;
import org.apache.poi.util.LittleEndianOutput;
 * Allows the writing of BIFF records when the 'ushort size' header field is not known in advance.
 * When the client is finished writing data, it calls {@link #terminate()}, at which point this
 * class updates the 'ushort size' with its final value.
final class UnknownLengthRecordOutput implements LittleEndianOutput {
    private static final int MAX_DATA_SIZE = RecordInputStream.MAX_RECORD_DATA_SIZE;

    private final LittleEndianOutput _originalOut;
    /** for writing the 'ushort size'  field once its value is known */
    private final LittleEndianOutput _dataSizeOutput;
    private final byte[] _byteBuffer;
    private LittleEndianOutput _out;
    private int _size;

    public UnknownLengthRecordOutput(LittleEndianOutput out, int sid) {
        _originalOut = out;
        if (out instanceof DelayableLittleEndianOutput) {
            // optimisation
            DelayableLittleEndianOutput dleo = (DelayableLittleEndianOutput) out;
            _dataSizeOutput = dleo.createDelayedOutput(2);
            _byteBuffer = null;
            _out = out;
        } else {
            // otherwise temporarily write all subsequent data to a buffer
            _dataSizeOutput = out;
            _byteBuffer = new byte[RecordInputStream.MAX_RECORD_DATA_SIZE];
            _out = new LittleEndianByteArrayOutputStream(_byteBuffer, 0);
     * includes 4 byte header
    public int getTotalSize() {
        return 4 + _size;
    public int getAvailableSpace() {
        if (_out == null) {
            throw new IllegalStateException("Record already terminated");
        return MAX_DATA_SIZE - _size;
     * Finishes writing the current record and updates 'ushort size' field.<br>
     * After this method is called, only {@link #getTotalSize()} may be called.
    public void terminate() {
        if (_out == null) {
            throw new IllegalStateException("Record already terminated");
        if (_byteBuffer != null) {
            _originalOut.write(_byteBuffer, 0, _size);
            _out = null;
        _out = null;

    public void write(byte[] b) {
        _size += b.length;
    public void write(byte[] b, int offset, int len) {
        _out.write(b, offset, len);
        _size += len;
    public void writeByte(int v) {
        _size += 1;
    public void writeDouble(double v) {
        _size += 8;
    public void writeInt(int v) {
        _size += 4;
    public void writeLong(long v) {
        _size += 8;
    public void writeShort(int v) {
        _size += 2;


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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