Retrieve only static fields declared in Java class

I have the following class:

public class Test {
    public static int a = 0;
    public int b = 1;
}

Is it possible to use reflection to get a list of the static fields only? I'm aware I can get an array of all the fields with Test.class.getDeclaredFields(). But it seems there's no way to determine if a Field instance represents a static field or not.

You can do it like this:

Field[] declaredFields = Test.class.getDeclaredFields();
List<Field> staticFields = new ArrayList<Field>();
for (Field field : declaredFields) {
	if (java.lang.reflect.Modifier.isStatic(field.getModifiers())) {
		staticFields.add(field);
	}
}

I stumbled across this question by accident and felt it needed a Java 8 update using streams:

public static List<Field> getStatics(Class<?> clazz) {
	List<Field> result;

	result = Arrays.stream(clazz.getDeclaredFields())
			// filter out the non-static fields
			.filter(f -> Modifier.isStatic(f.getModifiers()))
			// collect to list
			.collect(toList());

	return result;
}

Obviously, that sample is a bit embelished for readability. In actually, you would likely write it like this:

public static List<Field> getStatics(Class<?> clazz) {
	return Arrays.stream(clazz.getDeclaredFields()).filter(f ->
        Modifier.isStatic(f.getModifiers())).collect(toList());
}

Thats Simple , you can use Modifier to check if a field is static or not. Here is a sample code for that kind of task.

public static void printModifiers(Object o) {
    Class c = o.getClass();
    int m = c.getModifiers();
    if (Modifier.isPublic(m))
        System.out.println ("public");
    if (Modifier.isAbstract(m))
        System.out.println ("abstract");
    if (Modifier.isFinal(m))
        System.out.println ("final");
    if(Modifier.isStatic(m))
        System.out.println("static");
}

If you can add open-source dependencies to your project you can also use FieldUtils.readDeclaredStaticField(Test.class,"a")