Java IO流的缓冲字符流

public static void main(String[] args) throws IOException {String dir = "e:/test/Java";String fileName = "java.txt";//创建一个文件File f = new File(dir,fileName);NewDir(dir); //检查目录是否存在f.createNewFile(); //创建文件名//输出字符流FileWriter fw = new FileWriter(f);BufferedWriter bfw = new BufferedWriter(fw);for(int i=1; i<=100; i++){bfw.write(String.valueOf(Math.random()));bfw.newLine();}bfw.close();fw.close();//输入字符流FileReader fr = new FileReader(f);BufferedReader br = new BufferedReader(fr);while((br.read())!=-1){System.out.println(br.readLine());}br.close();fr.close();}//创建目录public static void NewDir(String dir){File f = new File(dir);if(!f.exists()){f.mkdirs();}}

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