java 不循环输出数组，逗号隔开

public static void main(String[] args) {        // 逗号分隔,输出数组        Integer a [] = {1,2,14,5};        System.out.println(Arrays.toString(a));        // 数组转 List 集合         List<Integer> b = Arrays.asList(a);        System.out.println(b.size());        // List 集合转数组        Integer [] c = new Integer[b.size()];        b.toArray(c);        System.out.println(c.length);    }