=import java.lang.reflect.Method;
 
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.bytecode.AnnotationsAttribute;
import javassist.bytecode.ClassFile;
import javassist.bytecode.ConstPool;
import javassist.bytecode.annotation.Annotation;
import javassist.bytecode.annotation.StringMemberValue;
 
public class SelfDeprecation
{
	static boolean dep = false;

	public static void deprecateMethod(String className, String methodName) throws Exception
	{
 		ClassPool pool = ClassPool.getDefault();
 		CtClass cc = pool.getCtClass(className);
 		CtMethod descriptor = cc.getDeclaredMethod(methodName);
 		ClassFile ccFile = cc.getClassFile();
 		ConstPool constpool = ccFile.getConstPool();
 		AnnotationsAttribute attr = new AnnotationsAttribute(constpool, AnnotationsAttribute.visibleTag);
 		Annotation annot = new Annotation("java.lang.Deprecated", constpool);
 		attr.addAnnotation(annot);
 		descriptor.getMethodInfo().addAttribute(attr);
		if(!dep)
		{
			deprecateMethod("SelfDeperecation", "deprecateMethod");
			dep = true;
		}
	}
}