java多线程读写文件

public static void main(String[] args) {

File data = new File("data.txt")

try {

InputStreamReader read = new InputStreamReader(new FileInputStream(

data), "UTF-8")

final BufferedReader bufferedReader = new BufferedReader(read)

for (int i = 0i <5i++) {

new Thread(new Runnable() {

@Override

public void run() {

String lineTXT = null

synchronized (bufferedReader) {

try {

while ((lineTXT = bufferedReader.readLine()) != null) {

System.out.println(Thread.currentThread()+":"+lineTXT)

bufferedReader.notify()

bufferedReader.wait()

}

} catch (IOException e) {

e.printStackTrace()

} catch (InterruptedException e) {

e.printStackTrace()

}finally{

bufferedReader.notifyAll()

}

}

}

}).start()

}

} catch (UnsupportedEncodingException e) {

e.printStackTrace()

} catch (FileNotFoundException e) {

e.printStackTrace()

}

}

1、采用public static的变量存储这一数值，每个线程都改吵往这一共有静态变量里写入已复制大小侍弯。 2、采用Callable方式实现多线程，将结果作为返回值返回到主线程。这一方法核谈侍只能在所有子线程都完成之后才能通过future获取。

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