2018年11月2日
stringbuffer.append(args) args可以多类型
摘要： Use append(String str) API method of StringBuffer. This method appends the specified string to this character sequence. The method can also be used to 阅读全文
posted @ 2018-11-02 17:43 7894561230 阅读(198) 评论(0) 推荐(0)
在java中如何表示pairs。map要求key是不重复的
摘要： Java 9+ In Java 9, you can simply write: Map.entry(key, value) to create an immutable pair. Note: this method does not allow keys or values to be null 阅读全文
posted @ 2018-11-02 00:30 7894561230 阅读(1239) 评论(0) 推荐(0)