package com.io.ioDemo;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
public class Readercopy {
public static void main(String[] args) {
BufferedReader br = null;
BufferedWriter bw = null;
try {
br = new BufferedReader(new FileReader(new File("c:\\aa.txt")));
//FileWriter的构造方法FileWriter(File file, boolean append)
//根据给定的 File 对象构造一个 FileWriter 对象。
//运行一次，复制一遍。
bw = new BufferedWriter(new FileWriter(new File("c:\\copy2.txt"),true));
String line = null;
while((line = br.readLine())!=null){
bw.write(line);
bw.newLine();
}
bw.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
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