[Java] IO-02 BufferStream1 / BufferStream2

import java.io.*;

public class TestBufferStream1 {
    public static void main(String[] args) {
        try {
            FileInputStream fis = new FileInputStream(
                    "d:\\share\\java\\HelloWorld.java");
            BufferedInputStream bis = new BufferedInputStream(fis);
            int c = 0;
            System.out.println(bis.read());
            System.out.println(bis.read());
            bis.mark(100);
            for (int i = 0; i <= 10 && (c = bis.read()) != -1; i++) {
                System.out.print((char) c + " ");
            }
            System.out.println();
            bis.reset();
            for (int i = 0; i <= 10 && (c = bis.read()) != -1; i++) {
                System.out.print((char) c + " ");
            }
            bis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

import java.io.*;

public class TestBufferStream2 {
    public static void main(String[] args) {
        try {
            BufferedWriter bw = new BufferedWriter(new FileWriter(
                    "d:\\share\\java\\dat2.txt"));
            BufferedReader br = new BufferedReader(new FileReader(
                    "d:\\share\\java\\dat2.txt"));
            String s = null;
            for (int i = 1; i <= 100; i++) {
                s = String.valueOf(Math.random());
                bw.write(s);
                bw.newLine();
            }
            bw.flush();
            while ((s = br.readLine()) != null) {
                System.out.println(s);
            }
            bw.close();
            br.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}