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<!DOCTYPE HTML>
<html lang>
<head>
<!-- Generated by javadoc (21) on Tue Nov 11 15:21:53 CST 2025 -->
<title>OneDimensionalCodeWriter (ZXing 3.5.4 API)</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="dc.created" content="2025-11-11">
<meta name="description" content="declaration: package: com.google.zxing.oned, class: OneDimensionalCodeWriter">
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<p>Summary:</p>
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<li>Nested</li>
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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">com.google.zxing.oned</a></div>
<h1 title="Class OneDimensionalCodeWriter" class="title">Class OneDimensionalCodeWriter</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance">com.google.zxing.oned.OneDimensionalCodeWriter</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>All Implemented Interfaces:</dt>
<dd><code><a href="../Writer.html" title="interface in com.google.zxing">Writer</a></code></dd>
</dl>
<dl class="notes">
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="CodaBarWriter.html" title="class in com.google.zxing.oned">CodaBarWriter</a></code>, <code><a href="Code128Writer.html" title="class in com.google.zxing.oned">Code128Writer</a></code>, <code><a href="Code39Writer.html" title="class in com.google.zxing.oned">Code39Writer</a></code>, <code><a href="Code93Writer.html" title="class in com.google.zxing.oned">Code93Writer</a></code>, <code><a href="ITFWriter.html" title="class in com.google.zxing.oned">ITFWriter</a></code>, <code><a href="UPCEANWriter.html" title="class in com.google.zxing.oned">UPCEANWriter</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">OneDimensionalCodeWriter</span>
<span class="extends-implements">extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>
implements <a href="../Writer.html" title="interface in com.google.zxing">Writer</a></span></div>
<div class="block"><p>Encapsulates functionality and implementation that is common to one-dimensional barcodes.</p></div>
<dl class="notes">
<dt>Author:</dt>
<dd>dsbnatut@gmail.com (Kazuki Nishiura)</dd>
</dl>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<li>
<section class="constructor-summary" id="constructor-summary">
<h2>Constructor Summary</h2>
<div class="caption"><span>Constructors</span></div>
<div class="summary-table two-column-summary">
<div class="table-header col-first">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">OneDimensionalCodeWriter</a>()</code></div>
<div class="col-last even-row-color">&nbsp;</div>
</div>
</section>
</li>
<!-- ========== METHOD SUMMARY =========== -->
<li>
<section class="method-summary" id="method-summary">
<h2>Method Summary</h2>
<div id="method-summary-table">
<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab3" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab3', 3)" class="table-tab">Abstract Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
<div id="method-summary-table.tabpanel" role="tabpanel" aria-labelledby="method-summary-table-tab0">
<div class="summary-table three-column-summary">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>protected static int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#appendPattern(boolean%5B%5D,int,int%5B%5D,boolean)" class="member-name-link">appendPattern</a><wbr>(boolean[]&nbsp;target,
 int&nbsp;pos,
 int[]&nbsp;pattern,
 boolean&nbsp;startColor)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>protected static void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#checkNumeric(java.lang.String)" class="member-name-link">checkNumeric</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>abstract boolean[]</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#encode(java.lang.String)" class="member-name-link">encode</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Encode the contents to boolean array expression of one-dimensional barcode.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>final <a href="../common/BitMatrix.html" title="class in com.google.zxing.common">BitMatrix</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#encode(java.lang.String,com.google.zxing.BarcodeFormat,int,int)" class="member-name-link">encode</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents,
 <a href="../BarcodeFormat.html" title="enum in com.google.zxing">BarcodeFormat</a>&nbsp;format,
 int&nbsp;width,
 int&nbsp;height)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Encode a barcode using the default settings.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../common/BitMatrix.html" title="class in com.google.zxing.common">BitMatrix</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#encode(java.lang.String,com.google.zxing.BarcodeFormat,int,int,java.util.Map)" class="member-name-link">encode</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents,
 <a href="../BarcodeFormat.html" title="enum in com.google.zxing">BarcodeFormat</a>&nbsp;format,
 int&nbsp;width,
 int&nbsp;height,
 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../EncodeHintType.html" title="enum in com.google.zxing">EncodeHintType</a>,<wbr>?&gt;&nbsp;hints)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Encode the contents following specified format.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean[]</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#encode(java.lang.String,java.util.Map)" class="member-name-link">encode</a><wbr>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents,
 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../EncodeHintType.html" title="enum in com.google.zxing">EncodeHintType</a>,<wbr>?&gt;&nbsp;hints)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Can be overwritten if the encode requires to read the hints map.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getDefaultMargin()" class="member-name-link">getDefaultMargin</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html" title="class or interface in java.util" class="external-link">Collection</a><wbr>&lt;<a href="../BarcodeFormat.html" title="enum in com.google.zxing">BarcodeFormat</a>&gt;</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getSupportedWriteFormats()" class="member-name-link">getSupportedWriteFormats</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-" title="class or interface in java.lang" class="external-link">wait</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<li>
<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;()">
<h3>OneDimensionalCodeWriter</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">OneDimensionalCodeWriter</span>()</div>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="encode(java.lang.String)">
<h3>encode</h3>
<div class="member-signature"><span class="modifiers">public abstract</span>&nbsp;<span class="return-type">boolean[]</span>&nbsp;<span class="element-name">encode</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents)</span></div>
<div class="block">Encode the contents to boolean array expression of one-dimensional barcode.
 Start code and end code should be included in result, and side margins should not be included.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>contents</code> - barcode contents to encode</dd>
<dt>Returns:</dt>
<dd>a <code>boolean[]</code> of horizontal pixels (false = white, true = black)</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="encode(java.lang.String,java.util.Map)">
<h3>encode</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean[]</span>&nbsp;<span class="element-name">encode</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents,
 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../EncodeHintType.html" title="enum in com.google.zxing">EncodeHintType</a>,<wbr>?&gt;&nbsp;hints)</span></div>
<div class="block">Can be overwritten if the encode requires to read the hints map. Otherwise it defaults to <code>encode</code>.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>contents</code> - barcode contents to encode</dd>
<dd><code>hints</code> - encoding hints</dd>
<dt>Returns:</dt>
<dd>a <code>boolean[]</code> of horizontal pixels (false = white, true = black)</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="encode(java.lang.String,com.google.zxing.BarcodeFormat,int,int)">
<h3>encode</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type"><a href="../common/BitMatrix.html" title="class in com.google.zxing.common">BitMatrix</a></span>&nbsp;<span class="element-name">encode</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents,
 <a href="../BarcodeFormat.html" title="enum in com.google.zxing">BarcodeFormat</a>&nbsp;format,
 int&nbsp;width,
 int&nbsp;height)</span></div>
<div class="block"><span class="description-from-type-label">Description copied from interface:&nbsp;<code><a href="../Writer.html#encode(java.lang.String,com.google.zxing.BarcodeFormat,int,int)">Writer</a></code></span></div>
<div class="block">Encode a barcode using the default settings.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="../Writer.html#encode(java.lang.String,com.google.zxing.BarcodeFormat,int,int)">encode</a></code>&nbsp;in interface&nbsp;<code><a href="../Writer.html" title="interface in com.google.zxing">Writer</a></code></dd>
<dt>Parameters:</dt>
<dd><code>contents</code> - The contents to encode in the barcode</dd>
<dd><code>format</code> - The barcode format to generate</dd>
<dd><code>width</code> - The preferred width in pixels</dd>
<dd><code>height</code> - The preferred height in pixels</dd>
<dt>Returns:</dt>
<dd><a href="../common/BitMatrix.html" title="class in com.google.zxing.common"><code>BitMatrix</code></a> representing encoded barcode image</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="encode(java.lang.String,com.google.zxing.BarcodeFormat,int,int,java.util.Map)">
<h3>encode</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../common/BitMatrix.html" title="class in com.google.zxing.common">BitMatrix</a></span>&nbsp;<span class="element-name">encode</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents,
 <a href="../BarcodeFormat.html" title="enum in com.google.zxing">BarcodeFormat</a>&nbsp;format,
 int&nbsp;width,
 int&nbsp;height,
 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../EncodeHintType.html" title="enum in com.google.zxing">EncodeHintType</a>,<wbr>?&gt;&nbsp;hints)</span></div>
<div class="block">Encode the contents following specified format.
 <code>width</code> and <code>height</code> are required size. This method may return bigger size
 <code>BitMatrix</code> when specified size is too small. The user can set both <code>width</code> and
 <code>height</code> to zero to get minimum size barcode. If negative value is set to <code>width</code>
 or <code>height</code>, <code>IllegalArgumentException</code> is thrown.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="../Writer.html#encode(java.lang.String,com.google.zxing.BarcodeFormat,int,int,java.util.Map)">encode</a></code>&nbsp;in interface&nbsp;<code><a href="../Writer.html" title="interface in com.google.zxing">Writer</a></code></dd>
<dt>Parameters:</dt>
<dd><code>contents</code> - The contents to encode in the barcode</dd>
<dd><code>format</code> - The barcode format to generate</dd>
<dd><code>width</code> - The preferred width in pixels</dd>
<dd><code>height</code> - The preferred height in pixels</dd>
<dd><code>hints</code> - Additional parameters to supply to the encoder</dd>
<dt>Returns:</dt>
<dd><a href="../common/BitMatrix.html" title="class in com.google.zxing.common"><code>BitMatrix</code></a> representing encoded barcode image</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getSupportedWriteFormats()">
<h3>getSupportedWriteFormats</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html" title="class or interface in java.util" class="external-link">Collection</a>&lt;<a href="../BarcodeFormat.html" title="enum in com.google.zxing">BarcodeFormat</a>&gt;</span>&nbsp;<span class="element-name">getSupportedWriteFormats</span>()</div>
</section>
</li>
<li>
<section class="detail" id="checkNumeric(java.lang.String)">
<h3>checkNumeric</h3>
<div class="member-signature"><span class="modifiers">protected static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">checkNumeric</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;contents)</span></div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>contents</code> - string to check for numeric characters</dd>
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link">IllegalArgumentException</a></code> - if input contains characters other than digits 0-9.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="appendPattern(boolean[],int,int[],boolean)">
<h3>appendPattern</h3>
<div class="member-signature"><span class="modifiers">protected static</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">appendPattern</span><wbr><span class="parameters">(boolean[]&nbsp;target,
 int&nbsp;pos,
 int[]&nbsp;pattern,
 boolean&nbsp;startColor)</span></div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>target</code> - encode black/white pattern into this array</dd>
<dd><code>pos</code> - position to start encoding at in <code>target</code></dd>
<dd><code>pattern</code> - lengths of black/white runs to encode</dd>
<dd><code>startColor</code> - starting color - false for white, true for black</dd>
<dt>Returns:</dt>
<dd>the number of elements added to target.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getDefaultMargin()">
<h3>getDefaultMargin</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">getDefaultMargin</span>()</div>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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