Java代码记录

（1）String.join 【1.8】

参数：
1、CharSequence, CharSequence...
2、CharSequence , Iterable<? extends CharSequence>

用例

        String seqs = "123,234,345,456";
        String[] seqArray = seqs.split(",");
        // 123 OR 234 OR 345 OR 456
        System.out.println(seqs.join(" OR ", seqArray));