牛客网Java刷题知识点之字节缓冲区练习之从A处复制文本文件到B处（BufferedReader、BufferedWriter）、复制文本文件的原理图解

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CopyTextByBufTest.java

package zhouls.bigdata.DataFeatureSelection.test;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

public class CopyTextByBufTest {

    /**

     * @param args

     * @throws IOException

     */

    public static void main(String[] args) throws IOException {

        FileReader fr = new FileReader("a.txt");

        BufferedReader bufr = new BufferedReader(fr);

        FileWriter fw = new FileWriter("b.txt");

        BufferedWriter bufw = new BufferedWriter(fw);

        String line = null;

        while((line=bufr.readLine())!=null){

            bufw.write(line);

            bufw.newLine();

            bufw.flush();

        }

        bufw.close();

        bufr.close();

    }

}