使用反射将short和long类型的值放进数组

import java.lang.reflect.Array;
import static java.lang.System.out;

public class ArrayTroubleToo {
    public static void main(String... args) {
        Object o = new int[2];
        Array.setShort(o, 0, (short) 2); // widening, succeeds
        Array.setLong(o, 1, 2L); // narrowing, fails
    }
}