Loop cancelling at end of line?
hi, I'm trying to read in a .txt file which is working fine. I've also built the loops to determine if the next token is a number or word. The problem I'm having though is that when my loop hits the end of the line it prints the students total instead of going to the next line and collecting more data. As you'll be able to see the program should print out
Student Name
score score score .... Total:
and so on....
however it will print
Student name
score score Total:
score
score
score
the students scores can be stored on multiple lines
the .txt file i'm reading in looks something like this
bob 54 34 23 56
45 45 23 45
45 fred 23
23 54
34
34
and so on...
any hints on how to continue the loop to the next line without printing the students totals? and where to put it? Thanks
Code:
import java.io.*;
//For String tokenizer
import java.util.*;
public class Assignment1
{
public static void main(String[] args)
{
//Prompt user for filename
System.out.println("Please type file name and press Enter: ");
//Create kbd as a new BufferedReader
BufferedReader kbd = new BufferedReader(new InputStreamReader(System.in));
//Set filename to null
String filename = null;
//Read kbd into the String filename
try
{
filename = kbd.readLine();
}
//Catch IO Exception and exit
catch (IOException e)
{
System.out.println("Filename was not correct.");
System.exit(0);
}
//Create new file
File file = new File("filename");
//Create String buffer for the .txt file
StringBuffer contents = new StringBuffer();
//Create new BufferedReader named reader and set to null
BufferedReader reader = null;
//Enter the filename into reader
try
{
reader = new BufferedReader(new FileReader(filename));
//Set new String text to null
String text = null;
// Loop repeats until file is empty
while ((text = reader.readLine()) != null)
{
contents.append(text).append(System.getProperty("line.separator"));
}
}
//Catch Exception if file is not found or something goes wrong and terminate
catch (FileNotFoundException e)
{
System.out.println("The filename entered was not found, program will now terminate.");
}
catch (IOException e)
{
System.out.println("The filename entered was not found, program will now terminate.");
}
finally
{
try
{
if (reader != null)
{
reader.close();
}
}
catch (IOException e)
{
System.out.println("The filename entered was not found, program will now terminate.");
}
}
//Create new String newStr contains the contents of the String buffer
String newStr = contents.toString();
//Create new String Tokenizer named StrTok
//Create new string tokenizer StrTok
StringTokenizer StrTok = new StringTokenizer(newStr, " ");
//New string
String token;
// Set State to 1
int State = 1;
//Declare number variable
int number=0;
int totalscore=0;
int filetotal=0;
String fullname = "";
//Set Loop to run while there are more tokens
while(StrTok.hasMoreTokens())
{
//Make new String for tokens
String S = StrTok.nextToken();
//Loop for first state
if (State == 1)
{
if(isNumber(S) == false)
{
fullname = S;
State = 2;
}
continue;
}
if (State == 2)
{
if(isNumber(S) == true)
{
//When encountering first number print out the name
System.out.println(fullname);
//Empty fullname for next student
fullname="";
//Set token to equal number
number = Integer.parseInt(S);
System.out.print(number+" ");
//Calculate totalscore
totalscore = totalscore + number;
//Advance to next state
State = 3;
}
//Else means next token is a word
else
{
//Add newest name to fullname
fullname = fullname + " "+S;
//Stay in name part of loop
State = 2;
}
continue;
}
if (State == 3)
{
//If next token = number
if(isNumber(S) == true)
{
//Set new token to number
number=Integer.parseInt(S);
//Add score to total
System.out.print(number+" ");
totalscore = totalscore + number;
//Stay in number loop
State = 3;
}
else
{
if(!S.equals("total"))
{
System.out.println("total "+totalscore);
State=2;
fullname=S;
totalscore=0;
}
else
State = 4;
}
continue;
}
//State 4
if(State == 4)
{
//Check if token after total is number
if(isNumber(S) == true)
{
//If token after total is a number that number must be
//the students total, check to see if the total from the
//file equals the total the program added up
filetotal = Integer.parseInt(S);
if(filetotal == totalscore)
{
System.out.println("total "+filetotal);
//Reset variables for next student and go back to loop start
number = 0;
totalscore = 0;
filetotal = 0;
State = 1;
}
//if totals do NOT match print out total from file w/ an *
else
{
System.out.println("total "+filetotal + "*");
//Reset variables for next student and go back to loop start
number = 0;
totalscore = 0;
filetotal = 0;
State = 1;
}
}
//if next token is not a number, total must be part of a name
else
{
//Print total score
System.out.println("total " + S);
//Reset Variables
number = 0;
totalscore = 0;
filetotal = 0;
fullname = "";
//keep total because it is part of the name and
//go back to state 2
State = 2;
}
continue;
}
//State 5
if (State == 5)
{
//means we have hit the beginning of a new name
//print out the total for previous student
System.out.println(totalscore);
//Reset variable for the next student
number = 0;
totalscore = 0;
filetotal = 0;
fullname = "";
//Keep previous token as the beginning of the new name
fullname = fullname + S;
//Goto State 2
State = 2;
}
//Closes while loop
}
}
public static boolean isNumber(String S)
{
//Loop to determine if next token is a number of word
//if loop returns true, token is a number
//if loop returns false, token is a word
for (int i = 0; i < S.length(); i++)
{
if (Character.isDigit(S.charAt(i)) == false)
return false;
}
return true;
}
}
