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count the number of tokens in the first line

2 replies on 1 page. Most recent reply: Jan 6, 2003 4:39 PM by Matt Gerrans

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ben

Posts: 57
Nickname: loftty
Registered: Oct, 2002

count the number of tokens in the first line

Posted: Jan 6, 2003 7:09 AM

Hello everyone i have this code which is below but i am stuck with how i can printout how many tokens are in the first line
could anyone give me some ideas please
thanks

code:
----------------------------------------------------------------------- ---------

import java.io.*;import java.util.*;import java.lang.*;import java.util.StringTokenizer.*;import java.sql.*; public class RT3 { public static void main(String[] args) { String token = null; String currentToken = ""; Hashtable hh = new Hashtable(); try { Vector v2 = new Vector(100); Vector v = new Vector(100); FileReader file = new FileReader("Work.csv"); BufferedReader buff = new BufferedReader(file); String line = buff.readLine(); StringTokenizer s = null; boolean eof = false; while (!eof){ s = new StringTokenizer(line.trim(),",",true); boolean lastToken = true; while (s.hasMoreTokens()) { token = s.nextToken(); if (lastToken){ if (token.equals(",")) { v.add(""); } lastToken = false; } if (! token.equals(",")) { v.add(token); } else { if (currentToken.equals(",")) { v.add(""); } } currentToken = token; } if (token.equals(",")) { v.add(""); } line = buff.readLine(); if (line == null){ eof = true;} } buff.close(); }catch (FileNotFoundException fe) { System.out.println("Error - - " + fe.toString()); }catch (NumberFormatException ne) { System.out.println("Error - - " + ne.toString()); } catch (IOException e) { System.out.println("Error - - " + e.toString()); } }}

----------------------------------------------------------------------------- ---

ben

Posts: 57
Nickname: loftty
Registered: Oct, 2002

Re: count the number of tokens in the first line

Posted: Jan 6, 2003 7:11 AM

sorry do not know why it came out like that
import java.io.*;
import java.util.*;
import java.lang.*;
import java.util.StringTokenizer.*;
import java.sql.*;

public class RT3 {

public static void main(String[] args) {

String token = null;
String currentToken = "";
Hashtable hh = new Hashtable();

try {
Vector v2 = new Vector(100);
Vector v = new Vector(100);
FileReader file = new FileReader("Work.csv");
BufferedReader buff = new BufferedReader(file);
String line = buff.readLine();
StringTokenizer s = null;
boolean eof = false;

while (!eof){
s = new StringTokenizer(line.trim(),",",true);
boolean lastToken = true;

while (s.hasMoreTokens()) {

token = s.nextToken();
if (lastToken){
if (token.equals(",")) {
v.add("");
}
lastToken = false;
}
if (! token.equals(",")) {
v.add(token);
}
else { if (currentToken.equals(",")) {
v.add("");

}
}
currentToken = token;

}
if (token.equals(",")) {
v.add("");
}

line = buff.readLine();
if (line == null){
eof = true;}
}

buff.close();
}catch (FileNotFoundException fe) {
System.out.println("Error - - " + fe.toString());
}catch (NumberFormatException ne) {
System.out.println("Error - - " + ne.toString());
} catch (IOException e) {
System.out.println("Error - - " + e.toString());

}
}
}

Matt Gerrans

Posts: 1153
Nickname: matt
Registered: Feb, 2002

Re: count the number of tokens in the first line

Posted: Jan 6, 2003 4:39 PM

Try using the [java] tags around your code in this forum, then it will come out with the indentation intact, as well as some color syntaxing.

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