用多线程复制出的文本打开是乱码？如何解决？ - 黑马程序员技术交流社区

class ReadWriter implements Runnable{
@Override
public void run() {
FileWriter fw=null; //写入流对象
FileReader fr=null; // 读取流对象
int len=0;
char [] chars=new char[1024];
try{
fw=new FileWriter("IOCopy.txt");
fr=new FileReader("IO.txt");
while ((len=fr.read(chars))!=-1){
fw.write(chars,0,len);
fw.flush();
}
}catch (IOException e){
e.printStackTrace();
} finally {
if (fr != null) {
try {
fr.close(); //关闭读取流
} catch (IOException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
}
if (fw != null) {
try {
fw.close(); //关闭写入流
} catch (IOException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
}
}
}
}
public class IOThreadDemo {
public static void main(String[] args) {
/* ReadWriter rw=new ReadWriter();
Thread t1=new Thread(rw);
Thread t2=new Thread(rw);
t1.start();
t2.start();*/
ExecutorService exec=Executors.newCachedThreadPool();
exec.submit(new ReadWriter());
exec.shutdown();
}
}

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