import java.lang.reflect.Array;public class ArrayExpand {public static void main(String[] args) {	int[] Test = { 1, 2, 3, 4, 5, 6,7 };	Test = (int[]) expand(Test);	for (int i = 0; i < Test.length; i++) {		System.out.println(Test[i]);	}}public static Object expand(Object array) {	int newLength=1;	if (array == null) {		return null;	}	Class c = array.getClass();	if (c.isArray()) {		int len = Array.getLength(array);// get array length		if (len >= newLength) {			return array;		} else {			Class cc = c.getComponentType();			Object newArray = Array.newInstance(cc, newLength);			System.arraycopy(array, 0, newArray, 0, len);			return newArray;		}	} else {		System.out.println("is not array");		throw new ClassCastException("need array");	}}}