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<title>CtNewMethod (Javassist API)</title>
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<h2 title="Class CtNewMethod" class="title">Class CtNewMethod</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li>javassist.CtNewMethod</li>
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<pre>public class <span class="typeNameLabel">CtNewMethod</span>
extends java.lang.Object</pre>
<div class="block">A collection of static methods for creating a <code>CtMethod</code>.
An instance of this class does not make any sense.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="CtClass.html#addMethod(javassist.CtMethod)"><code>CtClass.addMethod(CtMethod)</code></a></dd>
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<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()">CtNewMethod</a></span>()</code></th>
<td class="colLast"> </td>
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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="t1" class="tableTab"><span><a href="javascript:show(1);">Static 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>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#abstractMethod(javassist.CtClass,java.lang.String,javassist.CtClass%5B%5D,javassist.CtClass%5B%5D,javassist.CtClass)">abstractMethod</a></span>​(<a href="CtClass.html" title="class in javassist">CtClass</a> returnType,
java.lang.String mname,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameters,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] exceptions,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</code></th>
<td class="colLast">
<div class="block">Creates a public abstract method.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copy(javassist.CtMethod,java.lang.String,javassist.CtClass,javassist.ClassMap)">copy</a></span>​(<a href="CtMethod.html" title="class in javassist">CtMethod</a> src,
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">Creates a copy of a method with a new name.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copy(javassist.CtMethod,javassist.CtClass,javassist.ClassMap)">copy</a></span>​(<a href="CtMethod.html" title="class in javassist">CtMethod</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 method.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#delegator(javassist.CtMethod,javassist.CtClass)">delegator</a></span>​(<a href="CtMethod.html" title="class in javassist">CtMethod</a> delegate,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</code></th>
<td class="colLast">
<div class="block">Creates a method forwarding to a delegate in
a super class.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getter(java.lang.String,javassist.CtField)">getter</a></span>​(java.lang.String methodName,
<a href="CtField.html" title="class in javassist">CtField</a> field)</code></th>
<td class="colLast">
<div class="block">Creates a public getter method.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#make(int,javassist.CtClass,java.lang.String,javassist.CtClass%5B%5D,javassist.CtClass%5B%5D,java.lang.String,javassist.CtClass)">make</a></span>​(int modifiers,
<a href="CtClass.html" title="class in javassist">CtClass</a> returnType,
java.lang.String mname,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameters,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] exceptions,
java.lang.String body,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</code></th>
<td class="colLast">
<div class="block">Creates a method.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#make(java.lang.String,javassist.CtClass)">make</a></span>​(java.lang.String src,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</code></th>
<td class="colLast">
<div class="block">Compiles the given source code and creates a method.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#make(java.lang.String,javassist.CtClass,java.lang.String,java.lang.String)">make</a></span>​(java.lang.String src,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring,
java.lang.String delegateObj,
java.lang.String delegateMethod)</code></th>
<td class="colLast">
<div class="block">Compiles the given source code and creates a method.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#make(javassist.CtClass,java.lang.String,javassist.CtClass%5B%5D,javassist.CtClass%5B%5D,java.lang.String,javassist.CtClass)">make</a></span>​(<a href="CtClass.html" title="class in javassist">CtClass</a> returnType,
java.lang.String mname,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameters,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] exceptions,
java.lang.String body,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</code></th>
<td class="colLast">
<div class="block">Creates a public (non-static) method.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setter(java.lang.String,javassist.CtField)">setter</a></span>​(java.lang.String methodName,
<a href="CtField.html" title="class in javassist">CtField</a> field)</code></th>
<td class="colLast">
<div class="block">Creates a public setter method.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static <a href="CtMethod.html" title="class in javassist">CtMethod</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#wrapped(javassist.CtClass,java.lang.String,javassist.CtClass%5B%5D,javassist.CtClass%5B%5D,javassist.CtMethod,javassist.CtMethod.ConstParameter,javassist.CtClass)">wrapped</a></span>​(<a href="CtClass.html" title="class in javassist">CtClass</a> returnType,
java.lang.String mname,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameterTypes,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] exceptionTypes,
<a href="CtMethod.html" title="class in javassist">CtMethod</a> body,
<a href="CtMethod.ConstParameter.html" title="class in javassist">CtMethod.ConstParameter</a> constParam,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)</code></th>
<td class="colLast">
<div class="block">Creates a wrapped method.</div>
</td>
</tr>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>CtNewMethod</h4>
<pre>public CtNewMethod()</pre>
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<h4>make</h4>
<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> make​(java.lang.String src,
<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">Compiles the given source code and creates a method.
The source code must include not only the method body
but the whole declaration, for example,
<pre>"public Object id(Object obj) { return obj; }"</pre></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>src</code> - the source text.</dd>
<dd><code>declaring</code> - the class to which the created method is added.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
</dl>
</li>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> make​(java.lang.String src,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring,
java.lang.String delegateObj,
java.lang.String delegateMethod)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Compiles the given source code and creates a method.
The source code must include not only the method body
but the whole declaration, for example,
<pre>"public Object id(Object obj) { return obj; }"</pre>
<p>If the source code includes <code>$proceed()</code>, then
it is compiled into a method call on the specified object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>src</code> - the source text.</dd>
<dd><code>declaring</code> - the class to which the created method is added.</dd>
<dd><code>delegateObj</code> - the source text specifying the object
that is called on by <code>$proceed()</code>.</dd>
<dd><code>delegateMethod</code> - the name of the method
that is called by <code>$proceed()</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>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> make​(<a href="CtClass.html" title="class in javassist">CtClass</a> returnType,
java.lang.String mname,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameters,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] exceptions,
java.lang.String body,
<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">Creates a public (non-static) method. The created method cannot
be changed to a static method later.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>returnType</code> - the type of the returned value.</dd>
<dd><code>mname</code> - the method name.</dd>
<dd><code>parameters</code> - a list of the parameter types.</dd>
<dd><code>exceptions</code> - a list of the exception types.</dd>
<dd><code>body</code> - the source text of the method body.
It must be a block surrounded by <code>{}</code>.
If it is <code>null</code>, the created method
does nothing except returning zero or null.</dd>
<dd><code>declaring</code> - the class to which the created method is added.</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="#make(int,javassist.CtClass,java.lang.String,javassist.CtClass%5B%5D,javassist.CtClass%5B%5D,java.lang.String,javassist.CtClass)"><code>make(int, CtClass, String, CtClass[], CtClass[], String, CtClass)</code></a></dd>
</dl>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> make​(int modifiers,
<a href="CtClass.html" title="class in javassist">CtClass</a> returnType,
java.lang.String mname,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameters,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] exceptions,
java.lang.String body,
<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">Creates a method. <code>modifiers</code> can contain
<code>Modifier.STATIC</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>modifiers</code> - access modifiers.</dd>
<dd><code>returnType</code> - the type of the returned value.</dd>
<dd><code>mname</code> - the method name.</dd>
<dd><code>parameters</code> - a list of the parameter types.</dd>
<dd><code>exceptions</code> - a list of the exception types.</dd>
<dd><code>body</code> - the source text of the method body.
It must be a block surrounded by <code>{}</code>.
If it is <code>null</code>, the created method
does nothing except returning zero or null.</dd>
<dd><code>declaring</code> - the class to which the created method is added.</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="Modifier.html" title="class in javassist"><code>Modifier</code></a></dd>
</dl>
</li>
</ul>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> copy​(<a href="CtMethod.html" title="class in javassist">CtMethod</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 method. This method is provided for creating
a new method based on an existing method.
This is a convenience method for calling
<a href="CtMethod.html#%3Cinit%3E(javassist.CtMethod,javassist.CtClass,javassist.ClassMap)"><code>this constructor</code></a>.
See the description of the constructor for particular behavior of the copying.</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 hash table 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="CtMethod.html#%3Cinit%3E(javassist.CtMethod,javassist.CtClass,javassist.ClassMap)"><code>CtMethod(CtMethod,CtClass,ClassMap)</code></a></dd>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> copy​(<a href="CtMethod.html" title="class in javassist">CtMethod</a> src,
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">Creates a copy of a method with a new name.
This method is provided for creating
a new method based on an existing method.
This is a convenience method for calling
<a href="CtMethod.html#%3Cinit%3E(javassist.CtMethod,javassist.CtClass,javassist.ClassMap)"><code>this constructor</code></a>.
See the description of the constructor for particular behavior of the copying.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>src</code> - the source method.</dd>
<dd><code>name</code> - the name of the created method.</dd>
<dd><code>declaring</code> - the class to which the created method is added.</dd>
<dd><code>map</code> - the hash table 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="CtMethod.html#%3Cinit%3E(javassist.CtMethod,javassist.CtClass,javassist.ClassMap)"><code>CtMethod(CtMethod,CtClass,ClassMap)</code></a></dd>
</dl>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> abstractMethod​(<a href="CtClass.html" title="class in javassist">CtClass</a> returnType,
java.lang.String mname,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameters,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] exceptions,
<a href="CtClass.html" title="class in javassist">CtClass</a> declaring)
throws <a href="NotFoundException.html" title="class in javassist">NotFoundException</a></pre>
<div class="block">Creates a public abstract method.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>returnType</code> - the type of the returned value</dd>
<dd><code>mname</code> - the method name</dd>
<dd><code>parameters</code> - a list of the parameter types</dd>
<dd><code>exceptions</code> - a list of the exception types</dd>
<dd><code>declaring</code> - the class to which the created method is added.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="NotFoundException.html" title="class in javassist">NotFoundException</a></code></dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="CtMethod.html#%3Cinit%3E(javassist.CtClass,java.lang.String,javassist.CtClass%5B%5D,javassist.CtClass)"><code>CtMethod(CtClass,String,CtClass[],CtClass)</code></a></dd>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> getter​(java.lang.String methodName,
<a href="CtField.html" title="class in javassist">CtField</a> field)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Creates a public getter method. The getter method returns the value
of the specified field in the class to which this method is added.
The created method is initially not static even if the field is
static. Change the modifiers if the method should be static.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>methodName</code> - the name of the getter</dd>
<dd><code>field</code> - the field accessed.</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>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> setter​(java.lang.String methodName,
<a href="CtField.html" title="class in javassist">CtField</a> field)
throws <a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Creates a public setter method. The setter method assigns the
value of the first parameter to the specified field
in the class to which this method is added.
The created method is not static even if the field is
static. You may not change it to be static
by <code>setModifiers()</code> in <code>CtBehavior</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>methodName</code> - the name of the setter</dd>
<dd><code>field</code> - the field accessed.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code></dd>
</dl>
</li>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> delegator​(<a href="CtMethod.html" title="class in javassist">CtMethod</a> delegate,
<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">Creates a method forwarding to a delegate in
a super class. The created method calls a method specified
by <code>delegate</code> with all the parameters passed to the
created method. If the delegate method returns a value,
the created method returns that value to the caller.
The delegate method must be declared in a super class.
<p>The following method is an example of the created method.
<pre>
int f(int p, int q) {
return super.f(p, q);
}</pre>
<p>The name of the created method can be changed by
<code>setName()</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>delegate</code> - the method that the created method forwards to.</dd>
<dd><code>declaring</code> - the class to which the created method is
added.</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>
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<pre class="methodSignature">public static <a href="CtMethod.html" title="class in javassist">CtMethod</a> wrapped​(<a href="CtClass.html" title="class in javassist">CtClass</a> returnType,
java.lang.String mname,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] parameterTypes,
<a href="CtClass.html" title="class in javassist">CtClass</a>[] exceptionTypes,
<a href="CtMethod.html" title="class in javassist">CtMethod</a> body,
<a href="CtMethod.ConstParameter.html" title="class in javassist">CtMethod.ConstParameter</a> constParam,
<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">Creates a wrapped method. The wrapped method receives parameters
in the form of an array of <code>Object</code>.
<p>The body of the created method is a copy of the body of the method
specified by <code>body</code>. However, it is wrapped in
parameter-conversion code.
<p>The method specified by <code>body</code> must have this singature:
<pre>Object method(Object[] params, <type> cvalue)</pre>
<p>The type of the <code>cvalue</code> depends on
<code>constParam</code>.
If <code>constParam</code> is <code>null</code>, the signature
must be:
<pre>Object method(Object[] params)</pre>
<p>The method body copied from <code>body</code> is wrapped in
parameter-conversion code, which converts parameters specified by
<code>parameterTypes</code> into an array of <code>Object</code>.
The returned value is also converted from the <code>Object</code>
type to the type specified by <code>returnType</code>. Thus,
the resulting method body is as follows:
<pre>
Object[] params = new Object[] { p0, p1, ... };
<<i>type</i>> cvalue = <<i>constant-value</i>>;
<i>... copied method body ...</i>
Object result = <<i>returned value</i>>
return (<i><returnType></i>)result;
</pre>
<p>The variables <code>p0</code>, <code>p2</code>, ... represent
formal parameters of the created method.
The value of <code>cvalue</code> is specified by
<code>constParam</code>.
<p>If the type of a parameter or a returned value is a primitive
type, then the value is converted into a wrapper object such as
<code>java.lang.Integer</code>. If the type of the returned value
is <code>void</code>, the returned value is discarded.
<p><i>Example:</i>
<pre>
ClassPool pool = ... ;
CtClass vec = pool.makeClass("intVector");
vec.setSuperclass(pool.get("java.util.Vector"));
CtMethod addMethod = pool.getMethod("Sample", "add0");
CtClass[] argTypes = { CtClass.intType };
CtMethod m = CtNewMethod.wrapped(CtClass.voidType, "add", argTypes,
null, addMethod, null, vec);
vec.addMethod(m);</pre>
<p>where the class <code>Sample</code> is as follows:
<pre>public class Sample extends java.util.Vector {
public Object add0(Object[] args) {
super.addElement(args[0]);
return null;
}
}</pre>
<p>This program produces a class <code>intVector</code>:
<pre>public class intVector extends java.util.Vector {
public void add(int p0) {
Object[] args = new Object[] { p0 };
// begin of the copied body
super.addElement(args[0]);
Object result = null;
// end
}
}</pre>
<p>Note that the type of the parameter to <code>add()</code> depends
only on the value of <code>argTypes</code> passed to
<code>CtNewMethod.wrapped()</code>. Thus, it is easy to
modify this program to produce a
<code>StringVector</code> class, which is a vector containing
only <code>String</code> objects, and other vector classes.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>returnType</code> - the type of the returned value.</dd>
<dd><code>mname</code> - the method name.</dd>
<dd><code>parameterTypes</code> - a list of the parameter types.</dd>
<dd><code>exceptionTypes</code> - a list of the exception types.</dd>
<dd><code>body</code> - the method body
(must not be a static method).</dd>
<dd><code>constParam</code> - the constant parameter
(maybe <code>null</code>).</dd>
<dd><code>declaring</code> - the class to which the created method is
added.</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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