package Thread;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.util.LinkedList;
import java.util.Scanner;
public class UnSyncWriter {
      public static void main(String args[]) throws FileNotFoundException {
            final LinkedList<String> list = new LinkedList<String>();
            final PrintWriter pw = new PrintWriter(new FileOutputStream(
            "demo/sql.txt", true));
            final Thread writer = new Thread(new Runnable() {
                  public void run() {
                        while (true) {
                              if (list.isEmpty()) {
                                    System.out.println("空buf,睡眠5秒");
                                    pw.flush();
                                    try {
                                          Thread.sleep(5000); //5秒钟检查一次
                                    } catch (InterruptedException e) {
                                          System.out.println("吵尼玛呀!");
                                    }
                                    continue;
                              }
                              System.out.println("写入数据");
                              pw.println(list.removeFirst());
                        }
                  }
            });
            writer.setDaemon(true);
            final Thread reader = new Thread(new Runnable() {
                  public void run() {
                        Scanner scan = new Scanner(System.in);
                        while (true) {
                              String str = scan.nextLine();
                              list.addLast(str);
                              if(str.equalsIgnoreCase("q")){
                                    writer.interrupt();
                                    break;
                              }
                        }
                  }
            });
            writer.start();
            reader.start();
      }
}