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<title>CtConstructor (Javassist API)</title>
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<li>Summary: </li>
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<div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">javassist</a></div>
<h2 title="Class CtConstructor" class="title">Class CtConstructor</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="CtMember.html" title="class in javassist">javassist.CtMember</a></li>
<li>
<ul class="inheritance">
<li><a href="CtBehavior.html" title="class in javassist">javassist.CtBehavior</a></li>
<li>
<ul class="inheritance">
<li>javassist.CtConstructor</li>
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<pre>public final class <span class="typeNameLabel">CtConstructor</span>
extends <a href="CtBehavior.html" title="class in javassist">CtBehavior</a></pre>
<div class="block">An instance of CtConstructor represents a constructor.
It may represent a static constructor
(class initializer). To distinguish a constructor and a class
initializer, call <code>isClassInitializer()</code>.
<p>See the super class <code>CtBehavior</code> as well since
a number of useful methods are in <code>CtBehavior</code>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="CtClass.html#getDeclaredConstructors()"><code>CtClass.getDeclaredConstructors()</code></a>,
<a href="CtClass.html#getClassInitializer()"><code>CtClass.getClassInitializer()</code></a>,
<a href="CtNewConstructor.html" title="class in javassist"><code>CtNewConstructor</code></a></dd>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<h3>Constructor Summary</h3>
<table class="memberSummary">
<caption><span>Constructors</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(javassist.CtClass%5B%5D,javassist.CtClass)">CtConstructor</a></span>​(<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameters,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</code></th>
<td class="colLast">
<div class="block">Creates a constructor with no constructor body.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(javassist.CtConstructor,javassist.CtClass,javassist.ClassMap)">CtConstructor</a></span>​(<a href="CtConstructor.html" title="class in javassist">CtConstructor</a> src,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring,
<a href="ClassMap.html" title="class in javassist">ClassMap</a> map)</code></th>
<td class="colLast">
<div class="block">Creates a copy of a <code>CtConstructor</code> object.</div>
</td>
</tr>
</table>
</li>
</ul>
</section>
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<h3>Method Summary</h3>
<table class="memberSummary">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#callsSuper()">callsSuper</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns true if this constructor calls a constructor
of the super class.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getLongName()">getLongName</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the constructor name followed by parameter types
such as <code>javassist.CtConstructor(CtClass[],CtClass)</code>.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getName()">getName</a></span>()</code></th>
<td class="colLast">
<div class="block">Obtains the name of this constructor.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#insertBeforeBody(java.lang.String)">insertBeforeBody</a></span>​(java.lang.String src)</code></th>
<td class="colLast">
<div class="block">Inserts bytecode just after another constructor in the super class
or this class is called.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isClassInitializer()">isClassInitializer</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns true if this object represents a static initializer.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isConstructor()">isConstructor</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns true if this object represents a constructor.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isEmpty()">isEmpty</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns true if the constructor (or static initializer)
is the default one.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setBody(java.lang.String)">setBody</a></span>​(java.lang.String src)</code></th>
<td class="colLast">
<div class="block">Sets a constructor body.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setBody(javassist.CtConstructor,javassist.ClassMap)">setBody</a></span>​(<a href="CtConstructor.html" title="class in javassist">CtConstructor</a> src,
<a href="ClassMap.html" title="class in javassist">ClassMap</a> map)</code></th>
<td class="colLast">
<div class="block">Copies a constructor body from another constructor.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toMethod(java.lang.String,javassist.CtClass)">toMethod</a></span>​(java.lang.String name,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</code></th>
<td class="colLast">
<div class="block">Makes a copy of this constructor and converts it into a method.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toMethod(java.lang.String,javassist.CtClass,javassist.ClassMap)">toMethod</a></span>​(java.lang.String name,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring,
<a href="ClassMap.html" title="class in javassist">ClassMap</a> map)</code></th>
<td class="colLast">
<div class="block">Makes a copy of this constructor and converts it into a method.</div>
</td>
</tr>
</table>
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</a>
<h3>Methods inherited from class javassist.<a href="CtBehavior.html" title="class in javassist">CtBehavior</a></h3>
<code><a href="CtBehavior.html#addCatch(java.lang.String,javassist.CtClass)">addCatch</a>, <a href="CtBehavior.html#addCatch(java.lang.String,javassist.CtClass,java.lang.String)">addCatch</a>, <a href="CtBehavior.html#addLocalVariable(java.lang.String,javassist.CtClass)">addLocalVariable</a>, <a href="CtBehavior.html#addParameter(javassist.CtClass)">addParameter</a>, <a href="CtBehavior.html#getAnnotation(java.lang.Class)">getAnnotation</a>, <a href="CtBehavior.html#getAnnotations()">getAnnotations</a>, <a href="CtBehavior.html#getAttribute(java.lang.String)">getAttribute</a>, <a href="CtBehavior.html#getAvailableAnnotations()">getAvailableAnnotations</a>, <a href="CtBehavior.html#getAvailableParameterAnnotations()">getAvailableParameterAnnotations</a>, <a href="CtBehavior.html#getExceptionTypes()">getExceptionTypes</a>, <a href="CtBehavior.html#getGenericSignature()">getGenericSignature</a>, <a href="CtBehavior.html#getMethodInfo()">getMethodInfo</a>, <a href="CtBehavior.html#getMethodInfo2()">getMethodInfo2</a>, <a href="CtBehavior.html#getModifiers()">getModifiers</a>, <a href="CtBehavior.html#getParameterAnnotations()">getParameterAnnotations</a>, <a href="CtBehavior.html#getParameterTypes()">getParameterTypes</a>, <a href="CtBehavior.html#getSignature()">getSignature</a>, <a href="CtBehavior.html#hasAnnotation(java.lang.String)">hasAnnotation</a>, <a href="CtBehavior.html#insertAfter(java.lang.String)">insertAfter</a>, <a href="CtBehavior.html#insertAfter(java.lang.String,boolean)">insertAfter</a>, <a href="CtBehavior.html#insertAt(int,boolean,java.lang.String)">insertAt</a>, <a href="CtBehavior.html#insertAt(int,java.lang.String)">insertAt</a>, <a href="CtBehavior.html#insertBefore(java.lang.String)">insertBefore</a>, <a href="CtBehavior.html#insertParameter(javassist.CtClass)">insertParameter</a>, <a href="CtBehavior.html#instrument(javassist.CodeConverter)">instrument</a>, <a href="CtBehavior.html#instrument(javassist.expr.ExprEditor)">instrument</a>, <a href="CtBehavior.html#setAttribute(java.lang.String,byte%5B%5D)">setAttribute</a>, <a href="CtBehavior.html#setBody(java.lang.String,java.lang.String,java.lang.String)">setBody</a>, <a href="CtBehavior.html#setExceptionTypes(javassist.CtClass%5B%5D)">setExceptionTypes</a>, <a href="CtBehavior.html#setGenericSignature(java.lang.String)">setGenericSignature</a>, <a href="CtBehavior.html#setModifiers(int)">setModifiers</a>, <a href="CtBehavior.html#useCflow(java.lang.String)">useCflow</a></code></li>
</ul>
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</a>
<h3>Methods inherited from class javassist.<a href="CtMember.html" title="class in javassist">CtMember</a></h3>
<code><a href="CtMember.html#getDeclaringClass()">getDeclaringClass</a>, <a href="CtMember.html#hasAnnotation(java.lang.Class)">hasAnnotation</a>, <a href="CtMember.html#toString()">toString</a>, <a href="CtMember.html#visibleFrom(javassist.CtClass)">visibleFrom</a></code></li>
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</a>
<h3>Methods inherited from class java.lang.Object</h3>
<code>equals, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
</ul>
</li>
</ul>
</section>
</li>
</ul>
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<h3>Constructor Detail</h3>
<a id="<init>(javassist.CtClass[],javassist.CtClass)">
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</a>
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<h4>CtConstructor</h4>
<pre>public CtConstructor​(<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameters,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</pre>
<div class="block">Creates a constructor with no constructor body.
The created constructor
must be added to a class with <code>CtClass.addConstructor()</code>.
<p>The created constructor does not include a constructor body,
which must be specified with <code>setBody()</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>declaring</code> - the class to which the created method is added.</dd>
<dd><code>parameters</code> - a list of the parameter types</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="CtClass.html#addConstructor(javassist.CtConstructor)"><code>CtClass.addConstructor(CtConstructor)</code></a>,
<a href="#setBody(java.lang.String)"><code>setBody(String)</code></a>,
<a href="#setBody(javassist.CtConstructor,javassist.ClassMap)"><code>setBody(CtConstructor,ClassMap)</code></a></dd>
</dl>
</li>
</ul>
<a id="<init>(javassist.CtConstructor,javassist.CtClass,javassist.ClassMap)">
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<h4>CtConstructor</h4>
<pre>public CtConstructor​(<a href="CtConstructor.html" title="class in javassist">CtConstructor</a> src,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring,
<a href="ClassMap.html" title="class in javassist">ClassMap</a> map)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Creates a copy of a <code>CtConstructor</code> object.
The created constructor must be
added to a class with <code>CtClass.addConstructor()</code>.
<p>All occurrences of class names in the created constructor
are replaced with names specified by
<code>map</code> if <code>map</code> is not <code>null</code>.
<p>By default, all the occurrences of the names of the class
declaring <code>src</code> and the superclass are replaced
with the name of the class and the superclass that
the created constructor is added to.
This is done whichever <code>map</code> is null or not.
To prevent this replacement, call <code>ClassMap.fix()</code>
or <code>put()</code> to explicitly specify replacement.
<p><b>Note:</b> if the <code>.class</code> notation (for example,
<code>String.class</code>) is included in an expression, the
Javac compiler may produce a helper method.
Since this constructor never
copies this helper method, the programmers have the responsiblity of
copying it. Otherwise, use <code>Class.forName()</code> in the
expression.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>src</code> - the source method.</dd>
<dd><code>declaring</code> - the class to which the created method is added.</dd>
<dd><code>map</code> - the hashtable associating original class names
with substituted names.
It can be <code>null</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="CtClass.html#addConstructor(javassist.CtConstructor)"><code>CtClass.addConstructor(CtConstructor)</code></a>,
<a href="ClassMap.html#fix(java.lang.String)"><code>ClassMap.fix(String)</code></a></dd>
</dl>
</li>
</ul>
</li>
</ul>
</section>
<!-- ============ METHOD DETAIL ========== -->
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<ul class="blockList">
<li class="blockList"><a id="method.detail">
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</a>
<h3>Method Detail</h3>
<a id="isConstructor()">
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<h4>isConstructor</h4>
<pre class="methodSignature">public boolean isConstructor()</pre>
<div class="block">Returns true if this object represents a constructor.</div>
</li>
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<a id="isClassInitializer()">
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<h4>isClassInitializer</h4>
<pre class="methodSignature">public boolean isClassInitializer()</pre>
<div class="block">Returns true if this object represents a static initializer.</div>
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<h4>getLongName</h4>
<pre class="methodSignature">public java.lang.String getLongName()</pre>
<div class="block">Returns the constructor name followed by parameter types
such as <code>javassist.CtConstructor(CtClass[],CtClass)</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="CtBehavior.html#getLongName()">getLongName</a></code> in class <code><a href="CtBehavior.html" title="class in javassist">CtBehavior</a></code></dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>3.5</dd>
</dl>
</li>
</ul>
<a id="getName()">
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<h4>getName</h4>
<pre class="methodSignature">public java.lang.String getName()</pre>
<div class="block">Obtains the name of this constructor.
It is the same as the simple name of the class declaring this
constructor. If this object represents a class initializer,
then this method returns <code>"<clinit>"</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="CtMember.html#getName()">getName</a></code> in class <code><a href="CtMember.html" title="class in javassist">CtMember</a></code></dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="#getName()"><code>getName()</code></a></dd>
</dl>
</li>
</ul>
<a id="isEmpty()">
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<ul class="blockList">
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<h4>isEmpty</h4>
<pre class="methodSignature">public boolean isEmpty()</pre>
<div class="block">Returns true if the constructor (or static initializer)
is the default one. This method returns true if the constructor
takes some arguments but it does not perform anything except
calling <code>super()</code> (the no-argument constructor of
the super class).</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="CtBehavior.html#isEmpty()">isEmpty</a></code> in class <code><a href="CtBehavior.html" title="class in javassist">CtBehavior</a></code></dd>
</dl>
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<h4>callsSuper</h4>
<pre class="methodSignature">public boolean callsSuper()
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Returns true if this constructor calls a constructor
of the super class. This method returns false if it
calls another constructor of this class by <code>this()</code>.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
</dl>
</li>
</ul>
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<h4>setBody</h4>
<pre class="methodSignature">public void setBody​(java.lang.String src)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Sets a constructor body.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="CtBehavior.html#setBody(java.lang.String)">setBody</a></code> in class <code><a href="CtBehavior.html" title="class in javassist">CtBehavior</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>src</code> - the source code representing the constructor body.
It must be a single statement or block.
If it is <code>null</code>, the substituted
constructor body does nothing except calling
<code>super()</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
</dl>
</li>
</ul>
<a id="setBody(javassist.CtConstructor,javassist.ClassMap)">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>setBody</h4>
<pre class="methodSignature">public void setBody​(<a href="CtConstructor.html" title="class in javassist">CtConstructor</a> src,
<a href="ClassMap.html" title="class in javassist">ClassMap</a> map)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Copies a constructor body from another constructor.
<p>All occurrences of the class names in the copied body
are replaced with the names specified by
<code>map</code> if <code>map</code> is not <code>null</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>src</code> - the method that the body is copied from.</dd>
<dd><code>map</code> - the hashtable associating original class names
with substituted names.
It can be <code>null</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
</dl>
</li>
</ul>
<a id="insertBeforeBody(java.lang.String)">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>insertBeforeBody</h4>
<pre class="methodSignature">public void insertBeforeBody​(java.lang.String src)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Inserts bytecode just after another constructor in the super class
or this class is called.
It does not work if this object represents a class initializer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>src</code> - the source code representing the inserted bytecode.
It must be a single statement or block.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
</dl>
</li>
</ul>
<a id="toMethod(java.lang.String,javassist.CtClass)">
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<h4>toMethod</h4>
<pre class="methodSignature">public <a href="CtMethod.html" title="class in javassist">CtMethod</a> toMethod​(java.lang.String name,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Makes a copy of this constructor and converts it into a method.
The signature of the mehtod is the same as the that of this constructor.
The return type is <code>void</code>. The resulting method must be
appended to the class specified by <code>declaring</code>.
If this constructor is a static initializer, the resulting method takes
no parameter.
<p>An occurrence of another constructor call <code>this()</code>
or a super constructor call <code>super()</code> is
eliminated from the resulting method.
<p>The immediate super class of the class declaring this constructor
must be also a super class of the class declaring the resulting method.
If the constructor accesses a field, the class declaring the resulting method
must also declare a field with the same name and type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the name of the resulting method.</dd>
<dd><code>declaring</code> - the class declaring the resulting method.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
</dl>
</li>
</ul>
<a id="toMethod(java.lang.String,javassist.CtClass,javassist.ClassMap)">
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<ul class="blockListLast">
<li class="blockList">
<h4>toMethod</h4>
<pre class="methodSignature">public <a href="CtMethod.html" title="class in javassist">CtMethod</a> toMethod​(java.lang.String name,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring,
<a href="ClassMap.html" title="class in javassist">ClassMap</a> map)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Makes a copy of this constructor and converts it into a method.
The signature of the method is the same as the that of this constructor.
The return type is <code>void</code>. The resulting method must be
appended to the class specified by <code>declaring</code>.
If this constructor is a static initializer, the resulting method takes
no parameter.
<p>An occurrence of another constructor call <code>this()</code>
or a super constructor call <code>super()</code> is
eliminated from the resulting method.
<p>The immediate super class of the class declaring this constructor
must be also a super class of the class declaring the resulting method
(this is obviously true if the second parameter <code>declaring</code> is
the same as the class declaring this constructor).
If the constructor accesses a field, the class declaring the resulting method
must also declare a field with the same name and type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - the name of the resulting method.</dd>
<dd><code>declaring</code> - the class declaring the resulting method.
It is normally the same as the class declaring this
constructor.</dd>
<dd><code>map</code> - the hash table associating original class names
with substituted names. The original class names will be
replaced while making a copy.
<code>map</code> can be <code>null</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
</dl>
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