weixin_43788944的博客

网络上很很多勾选Enable annotation processing 但是没有用 我最终解决是添加POM如下，并且刷新maven，完美解决 <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.0</version> </dependency> ...

URL getUrl =new URL("http://www.weather.com.cn/data/sk/101230201.html"); //创建URl连接 HttpURLConnection connection = (HttpURLConnection) getUrl.openConnection(); //建立连接 connection.connect...

前端 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+requ...

服务器端 //服务器中不停的接收客户端的链接多线程类 public class Server implements Runnable{ private ServerSocket server; private boolean isRunnable=false; private BackInterface back; ServerClientSocket socket; public Serv...

pageContext.setAttribute("page", "page");//1 request.setAttribute("requset", "requset");//2 session.setAttribute("session", "session");//3 application.setAttribute("application", "application");//4 ...

public static void main(String[] args) { // TODO Auto-generated method stub File file=new File("a.txt"); if (!file.exists()) { boolean flag; try { flag = file.createNewFile();//创建 ...

Collections是Collection的工具类 集合遍历的方法 map.entrySet();2次封装HashMap进Set；

ArrayList类的常用方法 LinkedList 迭代器 Iterator<String> iterator=list.iterator(); while(iterator.hasNext()){ System.out.print(iterator.next()+" "); ｝

package day5; import java.util.Calendar; import java.util.Scanner; public class date { public static void main(String[] args) { System.out.println("输入年"); String weet[]={"星期7","星期1","星期2...

public static void main(String[] args) { // TODO Auto-generated method stub Connection con=null;//链接对象 Statement sta=null;//语句对象（写sql） try { //1.加载并注册 Class.forName("com.mysql.jd...