Java中的 BufferedWriter 和 BufferedReader

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package xdl.day17;import java.io.*;public class TestBufferedWriter {public static void main(String[] args) {try {BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("AgeException.txt")));for (int i = 0; i <= 10; i++) {bw.write("hello world" + "\n");}for (int i = 0; i <= 10; i++) {bw.write("hello" + "\n");}for (int i = 0; i <= 10; i++) {bw.write("world" + "\n");}System.out.println("ok");bw.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}try {BufferedReader re = new BufferedReader(new InputStreamReader(new FileInputStream("AgeException.txt")));// 读取目标文件中所有的内容// int res = 0;// char[] arr = new char[1024*8];// while ((res = re.read()) != -1) {// // System.out.println(re.read(arr, 0, res));// System.out.print((char) res);// }// 读取目标文件中一行的内容String str = re.readLine();System.out.println(str);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

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