src/org/nutz/lang/Nums.java
public static int[] join(int[] arr, int... is) {
        if (null == arr)
            return is;
        int length = arr.length + is.length;
        int[] re = new int[length];
        System.arraycopy(arr, 0, re, 0, arr.length);
        int i = arr.length;
        for (int num : is)
            re[i++] = num;
        return re;
    }
public static int[] join(int[] arr, int... is) {
        if (null == arr)
            return is;
        int length = arr.length + is.length;
        int[] re = new int[length];
        System.arraycopy(arr, 0, re, 0, arr.length);
        int i = arr.length;
        for (int num : is)
            re[i++] = num;
        return re;
    }
整合两个整数数组为一个数组 <b>这个方法在JDK5不可用!!<b/>

@param arr
整数数组
@param is
变参
@return 新的整合过的数组