EvanMeetTheWorld

摘要： https://blog.csdn.net/kingzone_2008/article/details/8535287 Most p... 阅读全文

posted @ 2020-10-29 10:14 EvanMeetTheWorld 阅读(14) 评论(0) 推荐(0)

摘要： Final keyword can be used with class, method and variable. A final... 阅读全文

posted @ 2020-10-29 10:14 EvanMeetTheWorld 阅读(10) 评论(0) 推荐(0)

摘要： Volatile is a field modifier, while synchronized modifies code blo... 阅读全文

posted @ 2020-10-29 10:14 EvanMeetTheWorld 阅读(14) 评论(0) 推荐(0)

摘要： A transaction symbolizes a unit of work performed within a databas... 阅读全文

posted @ 2020-10-28 07:40 EvanMeetTheWorld 阅读(22) 评论(0) 推荐(0)

摘要： Join == inner join, it selects records that have matching value in... 阅读全文

posted @ 2020-10-28 07:35 EvanMeetTheWorld 阅读(10) 评论(0) 推荐(0)

摘要： different implementation arraylist uses dynamic array and linkedli... 阅读全文

posted @ 2020-10-28 07:28 EvanMeetTheWorld 阅读(18) 评论(0) 推荐(0)

摘要： Abstract class have abstract and concrete methods, but interface c... 阅读全文

posted @ 2020-10-28 06:59 EvanMeetTheWorld 阅读(25) 评论(0) 推荐(0)

摘要： Encapsulation: we hide the details of implementation, and we only ... 阅读全文

posted @ 2020-10-28 06:53 EvanMeetTheWorld 阅读(10) 评论(0) 推荐(0)

摘要： Lamda表达式又称为闭包是JAVA8的新特性，它允许把函数作为参数传递到方法种而且lamda表达式的写法可谓是相当方便大大简... 阅读全文

posted @ 2020-10-28 06:43 EvanMeetTheWorld 阅读(23) 评论(0) 推荐(0)

摘要： It is not thread safe. because when we use put/get, or put/put the... 阅读全文

posted @ 2020-10-28 01:53 EvanMeetTheWorld 阅读(21) 评论(0) 推荐(0)