How do to know Field is an array? (java.lang.reflect.Field) in Java

Question

I have array from Field:

Field[] fields = instance.getClass().getDeclaredFields();

for (Field field : fields){    

if((field.getType() == Integer.class[])||(field.getType() == Object.class[]))
{
//...    
} 

}

How do to learn Field is array? (how to know which field is an array (Object[] array)?), Help me, please.

arshajii · Accepted Answer · 2013-11-03 19:37:38Z

20

Use Class#isArray():

if (field.getType().isArray()) {
    ...
}

answered Nov 3, 2013 at 19:37

arshajii

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Comments

Sergey Kalinichenko · Accepted Answer · 2013-11-03 19:37:40Z

12

You can call isArray() on the Class<T> object of the field's type. To get the type of the element, call getComponentType method.

if((field.getType().isArray()) {
    Class componentType = field.getType().getComponentType();
    ...
}

answered Nov 3, 2013 at 19:37

Sergey Kalinichenko

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