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Generating a main method
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created by <a href="http://community.jboss.org/people/nagure">Rafael Nagure</a> in <i>Javassist</i> - <a href="http://community.jboss.org/message/546375#546375">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi there, folks. Sorry if this is a dumb question, but I couldn't find any good explanation so far.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have the following code, a plain and simple <strong>HelloWorld</strong>:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">ClassPool pool = ClassPool.getDefault();
CtClass cc = pool.makeClass(<font color="red">"HelloWorld"</font>);
CtMethod mt = CtNewMethod.make(<font color="red">"public static void main(String[] args) { System.out.println(\"Hello World!\"); }"</font>, cc);
cc.addMethod(mt);
cc.writeFile();
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>As you see, there's a main method in this new generated class. So far, so good. It works like a charm.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I'd like to create this very same method using the other way:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">CtClass cc = pool.makeClass(<font color="red">"HelloWorld"</font>);
CtMethod m = <font color="navy"><b>new</b></font> CtMethod(CtClass.voidType, <font color="red">"main"</font>, <font color="navy"><b>new</b></font> CtClass[] <font color="navy">{</font> <font color="navy">}</font> , cc);
m.setModifiers(Modifier.PUBLIC & Modifier.STATIC);
cc.addMethod(m);
m.setBody(<font color="red">"{ System.out.println(\"Hello World!\"); }"</font>);
cc.setModifiers(cc.getModifiers() & ~Modifier.ABSTRACT);
cc.writeFile();
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Unfortunately, this code fails. I couldn't figure out how I'm supposed to handle String args[] with CtClass.TYPE, as it seems there are only primitive types.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks a lot!</p></div>
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