[Java]文件读写的两种方法

来源：互联网发布：阳春市网络问政平台编辑：程序博客网时间：2024/05/21 19:14

两个关于txt文件读写的方法，以供学习交流！

方法一：

/**    * 采用BufferedReader读取文本文件p    * @return    */   public String ReadTxt1(){   String url = "D:/text/1.txt";   StringBuffer strb = new StringBuffer();   try {FileInputStream fs = new FileInputStream(new File(url));InputStreamReader isr = new InputStreamReader(fs);BufferedReader br = new BufferedReader(isr);String data = "";while((data = br.readLine()) != null){strb.append(data + " ");}br.close();System.out.println(strb.toString());return strb.toString();} catch (Exception e) {System.out.println("读取失败！");e.printStackTrace();return null;}      }

方法二：

/**    * 采用FileReader（字符串形式）读取文本文件p    * @return    */   public String ReadTxt2(){   String url = "D:/text/1.txt";   String strs = "";   try {FileReader fread = new FileReader(new File(url));StringBuffer strb = new StringBuffer();char ch[] = new char[1024];int re = fread.read(ch);while(re != -1){String str = new String(ch,0,re);strb.append(str);re = fread.read(ch);}System.out.println(strb.toString());return strb.toString();} catch (Exception e) {System.out.println("读取失败！");e.printStackTrace();return null;}   }