package com.czie.iot1913.lps.IO.BufferStream;

import java.io.*;

/**
 * FileName: BufferSteamDemo00
 * Author:   lps
 * Date:     2022/3/26 15:34
 * Sign:劉品水 Q：1944900433
 * BufferedReader(Reader in)
 * 建立一個使用預設大小輸入緩衝區的緩衝字元輸入流。
 * BufferedReader(Reader in, int sz)
 * 建立一個使用指定大小的輸入緩衝區的緩衝字元輸入流。
 * BufferedWriter(Writer out)
 * 建立一個使用預設大小輸出緩衝區的緩衝字元輸出流。
 * BufferedWriter(Writer out, int sz)
 * 建立一個新的緩衝字元輸出流，該流使用給定大小的輸出緩衝區。
 */
public class BufferSteamDemo00 {
    public static void main(String[] args) throws IOException {
//        FileWriter fw = new FileWriter("F:\\JavaCode\\bw.txt");
//        BufferedWriter bw = new BufferedWriter(fw);
        BufferedWriter bw = new BufferedWriter(new FileWriter("F:\\JavaCode\\bw.txt"));
        //  private static int defaultCharBufferSize = 8192;
        //
        //    /**
        //     * Line separator string.  This is the value of the line.separator
        //     * property at the moment that the stream was created.
        //     */
        //    private String lineSeparator;
        //
        //    /**
        //     * Creates a buffered character-output stream that uses a default-sized
        //     * output buffer.
        //     *
        //     * @param  out  A Writer
        //     */
        //    public BufferedWriter(Writer out) {
        //        this(out, defaultCharBufferSize);
        //    }
        bw.write("hello\r\nworld\r\njava");
        bw.close();

        BufferedReader br = new BufferedReader(new FileReader("F:\\JavaCode\\bw.txt"));
        char[] chars = new char[1024];
        int len;
        while((len=br.read(chars))!=-1){
            System.out.println(new String(chars,0,len));
        }


    }
}