问将整数值写入文件并读取它

EN

import java.io.*;
public class FollowerChecker {
public static StringBuilder sb;
    static String readFile(String fileName) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader(fileName));
        try {
            sb = new StringBuilder();
            String line = br.readLine();

            while (line != null) {
                sb.append(line);
                sb.append("\n");
                line = br.readLine();

            }
            return sb.toString();
        } finally {
            br.close();

        }
    }



    public static void Writer() {

        FileWriter fw = null;

        try {
            fw = new FileWriter("donottouch.txt");
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


        StringWriter sw = new StringWriter();
        sw.write(TwitchStatus.totalfollows);


        try {
            fw.write(sw.toString());
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


        try {
            fw.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}