如何从实现类方法中获取Java自定义批注

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

@Retention(RetentionPolicy.RUNTIME)
public @interface MyAnnotation {
    // 定义批注的属性
    String value();
}

@MyAnnotation("这是一个示例批注")
public class MyClass {
    @MyAnnotation("这是一个示例字段批注")
    private String myField;

    @MyAnnotation("这是一个示例方法批注")
    public void myMethod() {
        // 方法实现
    }
}

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class AnnotationExample {
    public static void main(String[] args) {
        Class<MyClass> clazz = MyClass.class;

        // 获取类上的批注
        Annotation classAnnotation = clazz.getAnnotation(MyAnnotation.class);
        if (classAnnotation != null) {
            MyAnnotation myAnnotation = (MyAnnotation) classAnnotation;
            System.out.println("类批注：" + myAnnotation.value());
        }

        // 获取字段上的批注
        Field field;
        try {
            field = clazz.getDeclaredField("myField");
            Annotation fieldAnnotation = field.getAnnotation(MyAnnotation.class);
            if (fieldAnnotation != null) {
                MyAnnotation myAnnotation = (MyAnnotation) fieldAnnotation;
                System.out.println("字段批注：" + myAnnotation.value());
            }
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        }

        // 获取方法上的批注
        Method method;
        try {
            method = clazz.getDeclaredMethod("myMethod");
            Annotation methodAnnotation = method.getAnnotation(MyAnnotation.class);
            if (methodAnnotation != null) {
                MyAnnotation myAnnotation = (MyAnnotation) methodAnnotation;
                System.out.println("方法批注：" + myAnnotation.value());
            }
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        }
    }
}