摘要：package com.kk.Collection;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Set;import java.util.Map.Entry;/** *遍历Map的二种方法 * */public class HashMapTest { public static void main(String[] args) { Map<String,String> map=new HashMap<String ,String>(); 阅读全文

摘要：package com.kk.Collection;import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;import java.util.List;public class CompareTest { public static void main(String[] args) { List<Student> list=new ArrayList<Student>(10); list.add(new Student(1,"jj")); 阅读全文

摘要：package com.kk.Collection;import java.util.ArrayList;import java.util.Iterator;import java.util.List;public class ArrayListTest { public static void main(String[] args) { Point p1=new Point(1,3); Point p2=new Point(2,2); Point p3=new Point(3,1); List list=new ArrayList... 阅读全文

摘要：package com.kk.review;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;public class CharStream 阅读全文

摘要：package com.kk.review;import java.io.FileNotFoundException;import java.io.IOException;import java.io.RandomAccessFile;public class RandomAcessFileTest { public static void main(String[] args) { try { RandomAccessFile file=new RandomAccessFile("a.txt","rw"); //rw:读写 St... 阅读全文

摘要：package com.kk.review;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.nio.charset.Charset;import java.util.Map;import java.util.Properties;public class CharSetTest { public static void main(String[] args)throws IOException{ getAllSupportedCharSet(); ... 阅读全文

摘要：package com.kk.review;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.Serializable;public class SerializableTest { public static void main(String[] args) { try{ ... 阅读全文

摘要：package com.kk.review;import java.io.IOException;import java.io.PipedInputStream;import java.io.PipedOutputStream;public class PipedStream { public static void main(String[] args) { try{ PipedInputStream pis=new PipedInputStream(); PipedOutputStream pos=new PipedOutpu... 阅读全文

摘要：package com.kk.review;import java.io.File;public class FileTest { public static void main(String[] args) { getAllFileName(new File("F:/")); } /** * 递归获取所有文件 * @param file */ static void getAllFileName(File file){ for(File f:file.listFiles()){ if (f.isDirectory()) { getAllFileName(f); ... 阅读全文

摘要：package com.kk.review;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.In 阅读全文

摘要：package com.kk.review;import java.io.IOException;import java.net.DatagramPacket;import java.net.DatagramSocket;public class UDPServer { public static void main(String[] args) { UDPServer.receive(); } static void receive(){ try{ DatagramSocket ds=new Datagram... 阅读全文

摘要：服务端：package com.kk.review;import java.io.IOException;import java.io.InputStream;import java.net.ServerSocket;import java.net.Socket;import java.util.ArrayList;import java.util.List;class Server extends Thread{ static List<Socket> online=new ArrayList<Socket>(10); private Socket socket; p 阅读全文