Android : How to determine obj can be used in for loop

I have try following code, but it return false.

package ro.idea.ex;

import java.lang.reflect.Array;
import java.util.Collection;

/**
 * Created by roroco on 10/28/14.
 */
public class Ex {
    public <T> boolean canWorkInForLoop(T o) {
        return o instanceof Collection || o instanceof Iterable || o instanceof Array;
    }

    public static void main(String[] args) {
        int[] arr = {1, 2};
        Object r = new Ex().canWorkInForLoop(arr);
        System.out.println("r:" + r + "\t\t" + new Exception().getStackTrace()[0].getFileName() + ":" + new Exception().getStackTrace()[0].getLineNumber());
    }
}

my question is how to determine all obj which can be used in for loop, like new int[], instance of ArrayList and other obj?