Java Class getAnnotatedInterfaces() 方法

2025 年 3 月 21 日 | 阅读 2 分钟

Java Class 类的 getAnnotatedInterfaces() 方法返回一个 AnnotatedType 类型的对象数组，该数组表示此（当前类对象）Class 对象所代表的实体使用的超接口。

语法

参数

不传递任何参数。

返回值

表示超接口的数组

抛出

不抛出任何异常。

示例 1

  //import statements
import  java.io.Serializable;
import  java.lang.annotation.Annotation;
import java.lang.reflect.AnnotatedType;
import java.lang.reflect.Type;
import java.util.Arrays;

public class ClassgetAnnotatedInterfaceExample1 {

    public static void main(String[] args) {
        for (AnnotatedType annotatedType : MysubClass.class.getAnnotatedInterfaces()) {
            Type tp = annotatedType.getType();  //get annotated type
            System.out.println(" Anotated Type :" + tp);

            Annotation[] antn = annotatedType.getAnnotations(); //get annotations
            System.out.println("Annotations     :"  +Arrays.toString(antn));

            Annotation[] decAntn = annotatedType.getDeclaredAnnotations(); //getdeclared annotations
            System.out.println("Declared Annotations     :" +Arrays.toString(decAntn));
        }
    }

    private static class MysubClass implements Serializable {   //mysubclass implements serializable interface
    }
}

输出

Anotated Type :interface java.io.Serializable
Annotations     :[]
Declared Annotations     :[]

示例 2

import java.io.Serializable;
import java.lang.annotation.*;
import java.lang.reflect.AnnotatedType;
import java.lang.reflect.Type;
import java.util.Arrays;

public class ClassgetAnnotatedInterfaceExample2  {

    public static void main(String[] args) {
        AnnotatedType[] antype = MyClass.class.getAnnotatedInterfaces();
        for (AnnotatedType annotatedType : antype) { 
            Type tp = annotatedType.getType();  //get annotated type
            System.out.println("Annotated Type :" + tp);

            System.out.println("---------------------------------------------------------------------");
            Annotation[] ann = annotatedType.getAnnotations();  //get annotations
            System.out.println("Annotations :"  + Arrays.toString(ann));
            Annotation[] declared = annotatedType.getDeclaredAnnotations();   //getdeclaredannotations
            System.out.println("Declared Annotation :"   +Arrays.toString(declared));
        }
    }

    @Retention(RetentionPolicy.RUNTIME)
    @Target({ElementType.TYPE_USE})
    private @interface FileSystem {
    }

    private static class MyClass implements @FileSystem Serializable  { 
//mysubclass implements serializable interface

    }
}

输出

Annotated Type :interface java.io.Serializable
---------------------------------------------------------------------
Annotations :[@ClassgetAnnotatedInterfaceExample2$FileSystem()]
Declared Annotation :[@ClassgetAnnotatedInterfaceExample2$FileSystem()]

下一个主题Java类

Java Class getAnnotatedInterfaces() 方法

语法

参数

返回值

抛出

示例 1

示例 2

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Java Class getAnnotatedInterfaces() 方法

语法

参数

返回值

抛出

示例 1

示例 2

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