Java String.split 的坑，会忽略空值

    public static void main(String[] args) {
        String s1 = "14,,,11,,,,,,";
        String[] split1 = s1.split(",");
        System.out.println(Arrays.toString(split1));
        //[14, , , 11]
        
        String s2 = "14,,,11,,,,,,";
        String[] split2 = s2.split(",", -1);
        System.out.println(Arrays.toString(split2));
        //[14, , , 11, , , , , , ]
    }

java的split的坑，会忽略空值