- Java.io package classes
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- Java.io - BufferedInputStream
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- Java.io - FilterOutputStream
- Java.io - FilterReader
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- Java.io - InputStream
- Java.io - InputStreamReader
- Java.io - LineNumberInputStream
- Java.io - LineNumberReader
- Java.io - ObjectInputStream
- Java.io - ObjectInputStream.GetField
- Java.io - ObjectOutputStream
- io - ObjectOutputStream.PutField
- Java.io - ObjectStreamClass
- Java.io - ObjectStreamField
- Java.io - OutputStream
- Java.io - OutputStreamWriter
- Java.io - PipedInputStream
- Java.io - PipedOutputStream
- Java.io - PipedReader
- Java.io - PipedWriter
- Java.io - PrintStream
- Java.io - PrintWriter
- Java.io - PushbackInputStream
- Java.io - PushbackReader
- Java.io - RandomAccessFile
- Java.io - Reader
- Java.io - SequenceInputStream
- Java.io - SerializablePermission
- Java.io - StreamTokenizer
- Java.io - StringBufferInputStream
- Java.io - StringReader
- Java.io - StringWriter
- Java.io - Writer
- Java.io package extras
- Java.io - Interfaces
- Java.io - Exceptions
- Java.io package Useful Resources
- Java.io - Discussion
Java.io.StreamTokenizer.lineno() Method
Description
The java.io.StreamTokenizer.lineno() method returns the current line number.
Declaration
Following is the declaration for java.io.StreamTokenizer.lineno() method.
public int lineno()
Parameters
NA
Return Value
This method returns the current line number of this stream tokenizer.
Exception
NA
Example
The following example shows the usage of java.io.StreamTokenizer.lineno() method.
package com.tutorialspoint; 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(); } } }
Let us compile and run the above program, this will produce the following result −
Line Number:1 Word: Hello. Word: This Word: is Word: a Word: text End of Line encountered. Line Number:2 Word: that Word: will Word: be Word: split Word: into Word: tokens. Number: 1.0 + encountered. Number: 1.0 = encountered. Number: 2.0 End of File encountered.
java_io_streamtokenizer.htm
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