SelfDeprecation

=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;
        }
    }
}