Java.io.StreamTokenizer.lineno() 方法

package com.codingdict;



import java.io.*;



public class StreamTokenizerDemo {



   public static void main(String[] args) {

      String text = "Hello. This is a text \n that will be split "

         + "into tokens. 1 + 1 = 2";



      try {



         // create a new file with an ObjectOutputStream

         FileOutputStream out = new FileOutputStream("test.txt");

         ObjectOutputStream oout = new ObjectOutputStream(out);



         // write something in the file

         oout.writeUTF(text);

         oout.flush();



         // create an ObjectInputStream for the file we created before

         ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));



         // create a new tokenizer

         Reader r = new BufferedReader(new InputStreamReader(ois));

         StreamTokenizer st = new StreamTokenizer(r);



         // set line change as significant

         st.eolIsSignificant(true);



         // print the current line number

         System.out.println("Line Number:" + st.lineno());



         // print the stream tokens

         boolean eof = false;



         do {  

            int token = st.nextToken();



            switch (token) {

               case StreamTokenizer.TT_EOF:

                  System.out.println("End of File encountered.");

                  eof = true;

                  break;



               case StreamTokenizer.TT_EOL:

                  System.out.println("End of Line encountered.");

                  System.out.println("Line Number:" + st.lineno());

                  break;



               case StreamTokenizer.TT_WORD:

                  System.out.println("Word: " + st.sval);

                  break;



               case StreamTokenizer.TT_NUMBER:

                  System.out.println("Number: " + st.nval);

                  break;



               default:

                  System.out.println((char) token + " encountered.");



                  if (token == '!') {

                     eof = true;

                  }

            }

         } while (!eof);



      } catch (Exception ex) {

         ex.printStackTrace();

      }

   }

}