try {
FileReader fr=new FileReader("Seven.java");
BufferedReader br=new BufferedReader(fr);
FileWriter fw=new FileWriter("SevenOne.txt");
BufferedWriter bw=new BufferedWriter(fw);
String ws=br.readLine();
while(ws!=null){
bw.write(ws);
ws=br.readLine();
}
} catch (IOException e1) {
}
參考答案:写完了，有关闭文件吗？
