import java.io.BufferedReader;

　　import java.io.File;

　　import java.io.FileInputStream;

　　import java.io.InputStreamReader;

　　import java.io.PrintWriter;

　　import java.net.HttpURLConnection;

　　import java.net.URL;

　　import java.util.HashMap;

　　import java.util.Map;

　　import java.util.concurrent.ExecutorService;

　　import java.util.concurrent.Executors;

　　import java.util.concurrent.Semaphore;

　　public class ConcurrentTest {

　　private static int thread_num = 200;

　　private static int client_num = 460;

　　private static Map keywordMap = new HashMap();

　　static {

　　try {

　　InputStreamReader isr = new InputStreamReader(new FileInputStream(

　　new File("clicks.txt")), "GBK");

　　BufferedReader buffer = new BufferedReader(isr);

　　String line = "";

　　while ((line = buffer.readLine()) != null) {

　　keywordMap.put(line.substring(0, line.lastIndexOf(":")), "");

　　}

　　} catch (Exception e) {

　　e.printStackTrace();

　　}

　　}