readingtxt files

i know this has nothing to do with bukkit but i cant find the ansewer anywhere
how would i read a txt file like this?
playername:50:400:3939
i need to read all the numbers seperatly and the player name. i would like to do this in a txt file

anybody now how?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I use BufferedReader. I'll edit in a code example.

EDIT:

Here it is. I'm using BufferedReader to read the file, and StringTokenizer to split the String.

Code:

public <RETURN_TYPE> reader(String playerName, String filename){
    try {
        BufferedReader br = new BufferedReader(new FileReader(filename));
        String curLine;

        while ((curLine = br.readLine()) != null){
            StringTokenizer strTok = new StringTokenizer(playerName, ":");
            if (strTok.nextToken().equals(playerName)){
                // Here you can do whatever you want with the rest of the tokens. Just use strTok.nextToken() to get the rest of the token, split by colons.
            }
        }
    // This catches all the exceptions. You can go more in detail here if you want.
    } catch(Exception e){
        e.printStackTrace();
    }
}

 

thank you also how would you add a new line to a txt file without overwriting the whole thing?

 

You mean directly from the code?

Here is an example.:

Code:

public void writer(String filename, String whatToWrite){
        try {
            BufferedWriter bw = new BufferedWriter(new FileWriter(filename, /* True if you wanna append */ true));
            bw.write(whatToWrite + "\n"); // The \n is to make a new line.
            bw.flush();
            bw.close();
        } catch (Exception e){
            e.printStackTrace();
        }
    }

That piece of code should work.

 

when using you method i get this error

Code:

 java.util.NoSuchElementException
    at java.util.StringTokenizer.nextToken(Unknown Source)
    at Test.main(Test.java:20)

this is what im using ** are in place to keep what i am doing secret i dont want to be copyed

Code:

    public static void main (String [] args){

          try {
               BufferedReader br = new BufferedReader(new FileReader("******"));
               String curLine;

               while ((curLine = br.readLine()) != null){
                StringTokenizer strTok = new StringTokenizer(name, ":");
                if (strTok.nextToken().equals(name)){
                   String ****  = strTok.nextToken();
                **** = Integer.parseInt(****);
                String Nextlvl = strTok.nextToken();
               **** = Integer.parseInt(*****);
                String ****** = strTok.nextToken();
                ***** = Integer.parseInt(******);
                // Here you can do whatever you want with the rest of the tokens. Just use strTok.nextToken() to get the rest of the token, split by colons.
                System.out.println(***** + " " + ***** + " " + ******);
                   }
               }
           // This catches all the exceptions. You can go more in detail here if you want.
           } catch(Exception e){
               e.printStackTrace();
           }

    }
    

and here is the txt file

Code:

aplayer:0:500:0
1337:40:1000:3

--- merged: Jan 23, 2011 1:21 PM ---
ps that is for reading it not writing hav not tryed writing yet

 

I think it's here. You didn't define <name>:
StringTokenizer strTok = new StringTokenizer(name, ":")

 

i have a string called name that can be read from any method
String name; then when a player logs in it will make name = to there username so it cant be that thank you for you help btw also with the writing one how would i make it do it only if there is not already a line with there username in it?

anyone?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Why did you put <name> in the StringTokener then?
As far as I can see, you want to split the line you are reading from the file. In that case you have to make it <curLine> instead.

 

so i dont need name?

 

Well from what I can see you are trying to split the String you read from the line, and in that case you wanna put <curLine> into the StringTokenizer instead.

 

like this?

Code:

try {
               BufferedReader br = new BufferedReader(new FileReader("******"));
               String curLine;

               while ((curLine = br.readLine()) != null){
                StringTokenizer strTok = new StringTokenizer(curline, ":");
                if (strTok.nextToken().equals(curline)){
                   String ****  = strTok.nextToken();
                **** = Integer.parseInt(****);
                String Nextlvl = strTok.nextToken();
               **** = Integer.parseInt(*****);
                String ****** = strTok.nextToken();
                ***** = Integer.parseInt(******);
                // Here you can do whatever you want with the rest of the tokens. Just use strTok.nextToken() to get the rest of the token, split by colons.
                System.out.println(***** + " " + ***** + " " + ******);
                   }
               }
           // This catches all the exceptions. You can go more in detail here if you want.
           } catch(Exception e){
               e.printStackTrace();
           }

 

At the if statement, you're testing the first token of <curLine> to itself. What exactly do you want to test it to?

 

do you mean whats at the start of the line? then i want the playername

 

Read up on my pkugin MCDocs. I also host the source on my git hub. I handl files exactly as described in the OP

See my signature