java 按行读取文件并输出到控制台的方法

public static void main(string[] args) throws ioexception {

     /*

      * 1.打开一个file

      * 2.new一个inputstreamreader←fileinputstream←file

      * 3.用bufferedreader（←inputstreamreader）的readline()方法读取

      * */

     file ctofile = new file( "c://users//gl//desktop//ku//51cto.txt" );

     inputstreamreader rdcto = new inputstreamreader( new fileinputstream(ctofile));

     bufferedreader bfreader = new bufferedreader(rdcto);

     string txtline = null ;

     while ((txtline = bfreader.readline()) != null ) {

       system.out.println(txtline);

     }

     bfreader.close();

   };