reflect: is a Field an Array?

[Mikhail Teterin]

Hello!

I'm going through the fields of a class one at a time and need to handle
differently depending on whether they are arrays or scalars.

What's the right way to make the distinction? The snippet below fails to
detect arrays :(

Thanks!

-mi

import java.lang.reflect.*;
.....
for (Field field : getClass().getFields()) {
Type type = field.getGenericType();

System.err.println("Type of " + field + " is " + type + type.getClass());
if (type instanceof GenericArrayType)
System.err.println(field + " is an array!");
else
System.err.println(field + " is not an array");
}

[Robert Larsen]

Mikhail Teterin wrote:

Hello!

I'm going through the fields of a class one at a time and need to handle
differently depending on whether they are arrays or scalars.

What's the right way to make the distinction? The snippet below fails to
detect arrays :(

Thanks!

-mi

import java.lang.reflect.*;
....
for (Field field : getClass().getFields()) {
Type type = field.getGenericType();

System.err.println("Type of " + field + " is " + type + type.getClass());
if (type instanceof GenericArrayType)
System.err.println(field + " is an array!");
else
System.err.println(field + " is not an array");
}

robert-desktop:~ $ cat Test.java
import java.lang.reflect.*;

public class Test {
private int nonArray;
private int array[];

public Test() {
}

public static void main(String args[]) throws Exception {
Class c = Test.class;
for (Field f : c.getDeclaredFields()) {
System.out.println("Field: " + f + " Is array: " +
f.getType().isArray());
}
}
}
robert-desktop:~ $ javac Test.java
robert-desktop:~ $ java Test
Field: private int Test.nonArray Is array: false
Field: private int[] Test.array Is array: true
robert-desktop:~ $

[Mikhail Teterin]

Robert Larsen wrote:

f.getType().isArray()

Many thanks!

-mi