public class Test_currentTimeMillis { public static void main(String[] args) { long start=System.currentTimeMillis(); for(int i=0;i<Integer.MAX_VALUE;i++){} long end=System.currentTimeMillis(); System.out.println("for语句执行时长:"+(end-start)+&quo
ArrayList list = new ArrayList(); long startTicks = DateTime.Now.Ticks; for (int i = 0; i < 1000000; i++) { list.Add(i); } for (int i = 0; i < 1000000; i++) { int value = (int)list[i]; } long endTicks = DateTime.Now.Ticks; Console.WriteLine("ar
Spring Boot作为目前最流行的Java开发框架,秉承"约定优于配置"原则,大大简化了Spring MVC繁琐的XML文件配置,基本实现零配置启动项目. 本文基于Spring Boot 2.1.0.RELEASE版本了解Spring Boot如何启动 首先让我们看一下最简单的Spring Boot启动代码 @SpringBootApplication public class DemoApplication { public static void main(String[] a