java如何知道field是内部类的数组？

Question

我阅读这个教程： http://jroller.com/eyallupu/entry/two_side_notes_about_arrays

但仍然无法弄清楚如何原始，数组和类（在反射）

例如区分： 我有下面的类：

class MainClass { 

    public MainClass() { 
     memberSubClass = new SubClass(); 
     arrayMemberSubClass = new SubClass[3]; 
     for (int i = 0; i < 3; i++) { 
      arrayMemberSubClass[i] = new SubClass(); 
     } 
     array_int_member = new int[5]; 
    } 

    class SubClass { 
     public int x; 
     public short y; 
    } 

    public SubClass memberSubClass; 
    public SubClass[] arrayMemberSubClass; 
    public int int_member; 
    public int[] array_int_member; 
} 

我有以下方法（在其他类中）：

public void doSometing(Object obj) { 

    Field[] fields = obj.getClass().getFields(); 
    for (Field field : fields) {  
     if (field.getType().isArray()) { 
       if (field.getType().isPrimitive()) { 
        logger.debug(field.getName() + " is array of primitives"); 
       } else { 
        logger.debug(field.getName() + " is array of classes"); 
       }  
      } 
      else { 
       if (field.getType().isPrimitive()) { 
        logger.debug(field.getName() + " is primitives"); 
       } else { 
        logger.debug(field.getName() + " is class"); 
       }  
      } 
    } 
} 

输出是：

0 [main] DEBUG Logic - memberSubClass is class 
1 [main] DEBUG Logic - arrayMemberSubClass is array of classes 
1 [main] DEBUG Logic - int_member is primitives 
1 [main] DEBUG Logic - array_int_member is array of classes 

我希望得到follwing输出：

0 [main] DEBUG Logic - memberSubClass is class 
1 [main] DEBUG Logic - arrayMemberSubClass is array of classes 
1 [main] DEBUG Logic - int_member is primitives 
1 [main] DEBUG Logic - array_int_member is array of primitives 

我在做什么错？

Answer 1

从页面引用您：

One thing I think was missing in the post is how to get the type of the array elements using reflection. This can be done using the getComponentType() method: 

Boolean[] b = new Boolean[5]; 
Class<?> theTypeOfTheElements = b.getClass().getComponentType(); 
System.out.println(theTypeOfTheElements.getName());