Bufferedreader和BufferedWriter（带缓存的输入输出）

public class Student {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        String content[] = {"好久不见","最近好吗","常联系",};
        File file = new File("word.txt");
        try {
            FileWriter fw = new FileWriter(file);
            BufferedWriter bufw = new BufferedWriter(fw);
            for(int i=0;i<content.length;i++){
                bufw.write(content[i]);
                bufw.newLine();
            }
            bufw.close();
            fw.close();
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
        
        try {
            FileReader fr = new FileReader(file);
            BufferedReader bufr = new BufferedReader(fr);
            String string = null;
            int i=0;
            while((string = bufr.readLine())!=null){
                i++;
                System.out.println("第" + i + "行" + string);
            }
            bufr.close();
            fr.close();
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
    }

}