我想知道是否可以创建一个强制执行特定返回类型的Java Annotation？

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface ExpectedReturnType {
    Class<?> value();
}

public class MyClass {
    @ExpectedReturnType(String.class)
    public String myMethod() {
        // 方法实现
    }
}

import java.lang.reflect.Method;

public class ReturnTypeValidator {
    public static void validateReturnType(Object obj) {
        Class<?> clazz = obj.getClass();
        Method[] methods = clazz.getDeclaredMethods();
        
        for (Method method : methods) {
            if (method.isAnnotationPresent(ExpectedReturnType.class)) {
                ExpectedReturnType annotation = method.getAnnotation(ExpectedReturnType.class);
                Class<?> expectedReturnType = annotation.value();
                Class<?> actualReturnType = method.getReturnType();
                
                if (!expectedReturnType.isAssignableFrom(actualReturnType)) {
                    throw new RuntimeException("Invalid return type for method: " + method.getName());
                }
            }
        }
    }
}

public class Main {
    public static void main(String[] args) {
        MyClass myObj = new MyClass();
        ReturnTypeValidator.validateReturnType(myObj);
    }
}