[jboss-user] [Javassist user questions] - java.lang.NoSuchMethodException when invoking a method
I am getting java.lang.NoSuchMethodException when running the following code. Any ideas
how can I create a new class, add a method and invoke it?
String aMethod="printSomething";
String src="public static void "+aMethod+"()" +
"{" +
"System.out.println(\"Kia Hoa\");" +
"}";
System.out.println(src);
String className="mytest.MyTest";
// we assume that called methods have no argument
Class<?> params[] = {};
Object paramsObj[] = {};
try
{
ClassPool pool = ClassPool.getDefault();
CtClass cc = pool.makeClass(className);
CtNewMethod.make(src,cc);
cc.stopPruning(true);
//cc.freeze();
Loader cl = new Loader(pool);
// Class<?> thisClass = Class.forName(className);
Class thisClass = cl.loadClass(className);
// get the method
Method thisMethod = thisClass.getDeclaredMethod(aMethod);
// call the method
System.out.println
(thisMethod.invoke(thisClass, paramsObj).toString());
}
catch(Exception e)
{
e.printStackTrace();
}
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