字符流Reader

/**

 * 字符流

 * @author bpe

 *

 */

public class Reader {

      public static void main(String[] args ) {

           try {

               //字符流继承了InputStreamReader

               //创建字符流链接通道

              BufferedReader  reader = new BufferedReader( new FileReader( "D:\\bpe\\input.txt" ));

               char [] cs = new char [20];

               //跳过前5个字符

               //reader.skip(5);

               //读取一半

               //reader.read( cs , 0, cs.length/2);

               //读取完成为-1

               // int is=reader.read();

               //System.out.println("是否读取完成"+is);

               //判断此流是否能操作mark()

               boolean markSupported = reader .markSupported();

              System. out .println( "是否能操作mark方法" + markSupported );

               //返回值为false判断此流不能操作mark()

               reader .mark( cs . length /2);

               //让线程休息2秒钟

              Thread. sleep (2000);

               reader .read( cs );

              System. out .println( "暂停读取时读取到的数据：" + new String( cs ));

               //结束暂停开始读取

               reader .reset();

               reader .read( cs );

              System. out .println( "结束暂停重新开始读取的数据：" + new String( cs ));

               /*boolean b = reader.ready();

              System.out.println("是否准备好用于读取"+b);

              //读取所有的

              reader.read( cs );

              System.out.println(new String( cs ));*/

               reader .close();

          } catch (Exception e ) {

               // TODO Auto-generated catch block

               e .printStackTrace();

          }

     }

}