Java中的类 getAnnotatedInterfaces() 方法和示例

Java.lang.Class 类的getAnnotatedInterfaces()方法用于获取此类中存在的超接口类型注释。该方法返回一个存在的注释数组。
句法：

public Annotation[] getAnnotatedInterfaces()

参数：此方法不接受任何参数。
返回值：此方法返回存在的超接口类型注释数组。
下面的程序演示了 getAnnotatedInterfaces() 方法。
示例 1：

Java

// Java program to demonstrate
// getAnnotatedInterfaces() method
 
import java.io.*;
import java.util.*;
import java.lang.annotation.*;
 
// create a custom Annotation
@Retention(RetentionPolicy.RUNTIME)
public @interface CustomInterface {
}
 
@CustomInterface
interface CustomInterfaceImp {}
 
class Test implements CustomInterfaceImp{
 
    public Object obj;
 
    public static void main(String[] args)
        throws ClassNotFoundException
    {
 
        // returns the Class object for this class
        Class myClass = Test.class;
 
        System.out.println(
            "Class represented by myClass: "
            + myClass.toString());
 
        // Get the AnnotatedInterfaces
        // using getAnnotatedInterfaces() method
        System.out.println(
                "AnnotatedInterfaces of myClass: "
            + Arrays.toString(myClass
                .getAnnotatedInterfaces()));
    }
}

输出：

Class represented by myClass: class Test 
AnnotatedInterfaces of myClass: [sun.reflect.annotation.AnnotatedTypeFactory$AnnotatedTypeBaseImpl@4aa298b7] 
 

示例 2：

Java

// Java program to demonstrate
// getAnnotatedInterfaces() method
 
import java.io.*;
import java.util.*;
import java.lang.annotation.*;
 
class Test{
 
    public Object obj;
 
    public static void main(String[] args)
        throws ClassNotFoundException
    {
 
        // returns the Class object for this class
        Class myClass = Test.class;
 
        System.out.println(
            "Class represented by myClass: "
            + myClass.toString());
 
        // Get the AnnotatedInterfaces
        // using getAnnotatedInterfaces() method
        System.out.println(
                "AnnotatedInterfaces of myClass: "
            + Arrays.toString(myClass
                .getAnnotatedInterfaces()));
    }
}

输出：

Class represented by myClass: class Test 
AnnotatedInterfaces of myClass: [] 
 

参考： https://docs.oracle.com/javase/9/docs/api/ Java/lang/Class.html#getAnnotatedInterfaces–