Java Class getInterfaces()用法及代码示例

java.lang.Class类的getInterfaces()方法用于获取由此实体直接实现的接口。该实体可以是类或接口。该方法返回由该实体直接实现的接口数组。

用法:

public Class<T>[] getInterfaces()

参数：此方法不接受任何参数。

返回值：此方法返回由该实体直接实现的接口数组。

下面的程序演示了getInterfaces()方法。

示例1:

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

输出：

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

示例2:

// Java program to demonstrate getInterfaces() method 
  
import java.util.*; 
  
interface Arr { 
} 
  
public class Test implements Arr { 
  
    public static void main(String[] args) 
        throws ClassNotFoundException 
    { 
        // returns the Class object 
        Class myClass = Class.forName("Test"); 
  
        // Get the interfaces of myClass 
        // using getInterfaces() method 
        System.out.println( 
            "Interfaces of myClass: "
            + Arrays.toString( 
                  myClass.getInterfaces())); 
    } 
}

输出：

Interfaces of myClass: [interface Arr]

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

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注：本文由纯净天空筛选整理自srinam大神的英文原创作品 Class getInterfaces() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。