摘要：FilenameUtils.getExtension(file.getOriginalFilename()) 阅读全文

摘要：package com.junlenet.common.util; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * html处理工具类 * @author huweijun * @date 2016年7月13日 下午7:25:09 */ public class HtmlUtils { ... 阅读全文

摘要：public class Demo { private long time;//间隔的时间 private Runnable task;//指定的任务 private boolean flag = true; private Thread th = null;//默认为nul... 阅读全文

摘要：package cn.charp3;import java.net.DatagramSocket;import java.net.SocketException;public class charDemo { public static void main(String[] args) throws Exception { DatagramSocket send=new DatagramSocket(); DatagramSocket rece=new DatagramSocket(10001); new Thread(new Send(... 阅读全文

摘要：public static void main(String[] args)throws Exception { System.out.println("发送数据、、、"); DatagramSocket ds=new DatagramSocket(); String str="我来了udp"; BufferedReader bufr=new BufferedReader(new InputStreamReader(System.in)); String line=null; while(... 阅读全文

摘要：import java.net.*;class netDemo{ public static void main(String[] args)throws Exception { System.out.println("发送数据。。。。。"); DatagramSocket ds=new DatagramSocket(); String str="哥来了"; byte[] buf=str.getBytes(); DatagramPacket dp=new DatagramPacket(buf,buf.length... 阅读全文

摘要：import java.util.*;import java.text.*;class DateDemo{ public static void main(String[] arhgs) { String[] month={"一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"}; Stri 阅读全文

摘要：import java.util.*;class ArrayListDemo{ public static void main(String[] args) { ArrayList arr=new ArrayList(); arr.add("java01"); arr.add("java01"); arr.add("java02"); arr.add("java03"); arr.add("java01"); arr.add("java05"); sop(arr); ... 阅读全文

摘要：public abstract class WeekDay { private WeekDay(){} private final static WeekDay MON=new WeekDay(){ @Override public WeekDay nextday() { // TODO Auto-generated method stub return SUN; } }; final static WeekDay SUN=new WeekDay(){ @... 阅读全文

摘要：public class zhuangshiDemo{ public static void main(String[] args) { new superperson(new person()).eat(); }}class person{ public void eat() { System.out.println("吃家常饭"); }}class superperson{ private person p; public superperson(person p) { this.p=... 阅读全文

摘要：package awt;class DemoString{ public static void main(String[] args) { int[] arr={2,34,2,2,343,32,33}; select(arr); print(arr); } public static void select(int[] arr) { int[] ar=new int[arr.length]; for(int start=0,end=arr.length-1;start<end;star... 阅读全文

摘要：package fanshe;import java.lang.reflect.Constructor;import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;public class testDemo { public static void main(String[] args) throws Exception { method_9(); } private static void me... 阅读全文

摘要：package fanshe;import java.lang.reflect.Constructor;import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;public class testDemo { public static void main(String[] args) throws Exception { method_9(); } private static void me... 阅读全文

摘要：public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException { writerObj(); readerObj(); } private static void readerObj() throws IOException, ClassNotFoundException { ObjectInputStream ois=new ObjectInputStream(new FileInput... 阅读全文

摘要：public static void main(String[] args) throws IOException { File dir=new File("c:\\artfiles"); mergeFile(dir); } public static void mergeFile(File dir) throws IOException { ArrayList<FileInputStream> al=new ArrayList<FileInputStream>(); for(in... 阅读全文

摘要：public static void main(String[] args) throws IOException { File file=new File("寸草心.mp3"); splitFile(file); } public static void splitFile(File file) throws IOException{ FileInputStream fis=new FileInputStream(file); byte[] buf=new byte[1024*1024]; ... 阅读全文

摘要：public static void method_3() { File dir=new File("F:\\网络教材"); FilenameFilter filter=new FilenameFilter(){ @Override public boolean accept(File dir, String name) { // TODO Auto-generated method stub return name.endsWith(".pdf"); ... 阅读全文

摘要：package FileDemo;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.util.Properties;public class FileDemo { public static void main(String[] args) throws IOException { ... 阅读全文

摘要：package IO.file.test;import java.io.BufferedReader;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.InputStream;import java.io.ObjectInputStream;import jav 阅读全文

摘要：package IO.file.test;import java.util.Properties;import java.util.Set;public class PropertiesDemo { public static void main(String[] args) { Properties pro=new Properties(); pro.setProperty("zhangsan", "30"); pro.setProperty("lisi", "32"); pro.setProperty(&quo 阅读全文