import java.io.File;    import java.io.IOException;    import java.io.RandomAccessFile;    import java.nio.channels.FileChannel;    import java.nio.channels.FileLock;        /**     * @author DBJ     *     */    public class MyThreadInfoWritor {          private String filename;        /**         *         */        public MyThreadInfoWritor(String fileName) {            this.filename = fileName;        }          public void write(MyThreadInfo tInfo) {              RandomAccessFile out = null;            File file = new File(this.filename);            try {                if (!file.exists()) {                    file.createNewFile();                    out = new RandomAccessFile(file, "rw");                }                out = new RandomAccessFile(file, "rw");                  FileChannel fcout = out.getChannel();                FileLock flout = null;                while (true) {                    try {                        flout = fcout.lock();                        break;                    } catch (Exception e) {                        System.out.println("其他线程正在操作该文件，当前线程休眠1000毫秒");                        try {                            Thread.sleep(1000);                        } catch (InterruptedException e1) {                            e1.printStackTrace();                        }                    }                }                  long fileLength = out.length();                 out.seek(fileLength);                out.write(tInfo.toString().getBytes("utf8"));                  flout.release();                fcout.close();                out.close();                out = null;            } catch (IOException e) {                file.deleteOnExit();                System.out.println("Exception encountered: " + e);            }        }    }