java.lang.IllegalArgumentException: None of [public static java.lang.Object org.example.AopInterceptor.intercept(java.util.concurrent.Callable) throws java.lang.Exception] allows for delegation from public java.lang.String org.example.User.getName()

[yax1234567]

I want to intercept the getName method in the User class,
But after running it, I get the following error:
java.lang.IllegalArgumentException: None of [public static java.lang.Object org.example.AopInterceptor.intercept(java.util.concurrent.Callable) throws java.lang.Exception] allows for delegation from public java.lang.String org.example.User.getName()
at net.bytebuddy.implementation.bind.MethodDelegationBinder$Processor.bind(MethodDelegationBinder.java:1099)
at net.bytebuddy.implementation.MethodDelegation$Appender.apply(MethodDelegation.java:1349)
at net.bytebuddy.dynamic.scaffold.TypeWriter$MethodPool$Record$ForDefinedMethod$WithBody.applyCode(TypeWriter.java:730)
at net.bytebuddy.dynamic.scaffold.TypeWriter$MethodPool$Record$ForDefinedMethod$WithBody.applyBody(TypeWriter.java:715)
at net.bytebuddy.dynamic.scaffold.TypeWriter$Default$ForInlining$WithFullProcessing$RedefinitionClassVisitor$CodePreservingMethodVisitor.visitCode(TypeWriter.java:5502)
at net.bytebuddy.jar.asm.ClassReader.readMethod(ClassReader.java:1514)
at net.bytebuddy.jar.asm.ClassReader.accept(ClassReader.java:745)
at net.bytebuddy.jar.asm.ClassReader.accept(ClassReader.java:425)
Hope to get your help

public static void main(String[] args) throws Exception {
        User user = new User("TEST");
        Instrumentation inst = ByteBuddyAgent.install();
        AgentBuilder agentBuilder = new AgentBuilder.Default()
                .with(AgentBuilder.Listener.StreamWriting.toSystemOut())
                .with(AgentBuilder.RedefinitionStrategy.RETRANSFORMATION)
                .ignore(ElementMatchers.none())
                .disableClassFormatChanges().type(ElementMatchers.named(User.class.getName()))
                .transform((builder, typeDescription, classLoader, javaModule, protectionDomain)
                        -> builder.method(ElementMatchers.named("getName"))
                        .intercept(MethodDelegation.to(AopInterceptor.class)));
        ClassFileTransformer classFileTransformer = agentBuilder.makeRaw();
        inst.addTransformer(classFileTransformer, true);
        inst.retransformClasses(User.class);
        System.out.println(user.getName());
    }


public class AopInterceptor {
    @RuntimeType
    public static Object intercept(@SuperCall Callable<?> zuper)
            throws Exception {
        long before = System.currentTimeMillis();
        try {
            return zuper.call();
        } finally {
            System.out.println("Took: " + (System.currentTimeMillis() - before));
        }
    }
}

[raphw]

disableClassFormatChanges will implicitly change the instrumentation type to replace existing code, as the JVM does not allow for adding new methods, what is required to place the original code.

Use Advice instead

[yax1234567]

OK, thanks