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<!DOCTYPE HTML>
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<title>Translator (Javassist API)</title>
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<div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">javassist</a></div>
<h2 title="Interface Translator" class="title">Interface Translator</h2>
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<dt>All Known Implementing Classes:</dt>
<dd><code><a href="tools/reflect/Reflection.html" title="class in javassist.tools.reflect">Reflection</a></code>, <code><a href="tools/rmi/StubGenerator.html" title="class in javassist.tools.rmi">StubGenerator</a></code></dd>
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<pre>public interface <span class="typeNameLabel">Translator</span></pre>
<div class="block">An observer of <code>Loader</code>.
The users can define a class implementing this
interface and attach an instance of that class to a
<code>Loader</code> object so that it can translate a class file
when the class file is loaded into the JVM.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="Loader.html#addTranslator(javassist.ClassPool,javassist.Translator)"><code>Loader.addTranslator(ClassPool, Translator)</code></a></dd>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onLoad(javassist.ClassPool,java.lang.String)">onLoad</a></span>​(<a href="ClassPool.html" title="class in javassist">ClassPool</a> pool,
java.lang.String classname)</code></th>
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<div class="block">Is invoked by a <code>Loader</code> for notifying that
a class is loaded.</div>
</td>
</tr>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#start(javassist.ClassPool)">start</a></span>​(<a href="ClassPool.html" title="class in javassist">ClassPool</a> pool)</code></th>
<td class="colLast">
<div class="block">Is invoked by a <code>Loader</code> for initialization
when the object is attached to the <code>Loader</code> object.</div>
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<h4>start</h4>
<pre class="methodSignature">void start​(<a href="ClassPool.html" title="class in javassist">ClassPool</a> pool)
throws <a href="NotFoundException.html" title="class in javassist">NotFoundException</a>,
<a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Is invoked by a <code>Loader</code> for initialization
when the object is attached to the <code>Loader</code> object.
This method can be used for getting (for caching) some
<code>CtClass</code> objects that will be accessed
in <code>onLoad()</code> in <code>Translator</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pool</code> - the <code>ClassPool</code> that this translator
should use.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="NotFoundException.html" title="class in javassist">NotFoundException</a></code> - if a <code>CtClass</code> cannot be found.</dd>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code> - if the initialization by this method
fails.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="Loader.html" title="class in javassist"><code>Loader</code></a></dd>
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<h4>onLoad</h4>
<pre class="methodSignature">void onLoad​(<a href="ClassPool.html" title="class in javassist">ClassPool</a> pool,
java.lang.String classname)
throws <a href="NotFoundException.html" title="class in javassist">NotFoundException</a>,
<a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></pre>
<div class="block">Is invoked by a <code>Loader</code> for notifying that
a class is loaded. The <code>Loader</code> calls
<pre>
pool.get(classname).toBytecode()</pre>
to read the class file after <code>onLoad()</code> returns.
<p><code>classname</code> may be the name of a class
that has not been created yet.
If so, <code>onLoad()</code> must create that class so that
the <code>Loader</code> can read it after <code>onLoad()</code>
returns.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pool</code> - the <code>ClassPool</code> that this translator
should use.</dd>
<dd><code>classname</code> - the name of the class being loaded.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="NotFoundException.html" title="class in javassist">NotFoundException</a></code> - if a <code>CtClass</code> cannot be found.</dd>
<dd><code><a href="CannotCompileException.html" title="class in javassist">CannotCompileException</a></code> - if the code transformation
by this method fails.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="Loader.html" title="class in javassist"><code>Loader</code></a></dd>
</dl>
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<p class="legalCopy"><small><i>Javassist, a Java-bytecode translator toolkit.<br>
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