1.Timestamp(long)转成日期 Timestamp timestamp = new Timestamp(System.currentTimeMillis()); LocalDateTime localDateTime = timestamp.toLocalDateTime(); //之后就可以通过java8 新API操作时间了 localDateTime.toLocalDate(); Date date = new Date(timestamp.getTime()); //以
Date Calendar public class TestDate { private Date date; Calendar calendar; public TestDate() { //date = new Date(); //Date date2 = new Date(); //System.out.println(date.after(date2)); // date 是否比 date2晚 false calendar = Calendar.getInstance(); Sys
1.javascript的数组API Js代码 收藏代码 //定义数组 var pageIds = new Array(); pageIds.push('A'); 数组长度 pageIds.length; //shift:删除原数组第一项,并返回删除元素的值:如果数组为空则返回undefined var a = [1,2,3,4,5]; var b = a.shift(); //a:[2,3,4,5] b:1 //unshift:将参数添加到原数组开头,并返回数组的长度 var a = [1,2