文件流的基本使用方法

@Testpublic void testWrite() throws IOException {FileWriter fWriter = new FileWriter("E:/test/filewrite.txt");fWriter.write("Hello Subeyz!\r\n");fWriter.write("How Are You!\r\n");fWriter.write("I miss you xb!");// 字符流必须刷新缓存--flush()// 但是关闭方法最终也会自动刷一次--close()fWriter.flush();fWriter.close();}

@Testpublic void testRead() throws IOException{FileReader fReader = new FileReader("E:/test/filewrite.txt");char cbuf[] = new char[16];int len = 0;while((len = fReader.read(cbuf))>0){String string = new String(cbuf, 0, len);System.out.print(string);}fReader.close();}

这里只做简单演示，没有使用标准的异常处理方式，应该抓一下异常！