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Java.io.StreamTokenizer.ordinaryChar() Method
Description
The java.io.StreamTokenizer.ordinaryChar(int ch) method specifies that the character argument is "ordinary" in this tokenizer. It removes any special significance the character has as a comment character, word component, string delimiter, white space, or number character. When such a character is encountered by the parser, the parser treats it as a single-character token and sets ttype field to the character value.
Making a line terminator character "ordinary" may interfere with the ability of a StreamTokenizer to count lines. The lineno method may no longer reflect the presence of such terminator characters in its line count.
Declaration
Following is the declaration for java.io.StreamTokenizer.ordinaryChar() method.
public void ordinaryChar(int ch)
Parameters
ch − The character.
Return Value
This method does not return a value.
Exception
NA
Example
The following example shows the usage of java.io.StreamTokenizer.ordinaryChar() 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 \n as an ordinary char st.ordinaryChar('\n'); // 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."); 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 −
Word: AHello. Word: This Word: is Word: a Word: text End of Line encountered. 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.
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