Plugin Help Problem with delete with files string

Hello,
I have file with reports players. I want delete lines with this file. I don't know. What method?
Please help me

 

.txt

 

@tomecki1
So a file writer?
May need to read the whole file and then save the ones you need.
Or copy the file to a tmp file, skipping the lines you want to remove and then deleting the original and renaming the tmp file.

 

But I want to make the player from the game he could remove the first 3 lines and then what is next stored in advance by 3 lines to the top

 

@tomecki1
Could you rephrase that? I didn't understand you :/

 

Ehhhh...
I have a command / remove
He wants to after using this command from the File [...]. Txt have pulled out the first 3 lines of text, and these lines that are behind those moved to the first 3.
Do you understand?
Imaging:
It is my text:

Show Spoiler Hide Spoiler

sender: tomecki1
reported: jacek
Reason: bla bla bla
sender: jacek
reported: tomecki
Reason: bla bla bla
sender: aga
reported: adkvd
Reason: bla bla bla

And now:

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sender: tomecki1 // delete
reported: jacek // delete
Reason: bla bla bla // delete
sender: jacek
reported: tomecki
Reason: bla bla bla
sender: aga
reported: adkvd
Reason: bla bla bla

And I have it:

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sender: jacek
reported: tomecki
Reason: bla bla bla
sender: aga
reported: adkvd
Reason: bla bla bla

Do you understand?

 

@tomecki1
Yes
I would read the file using a BufferedReader, skip the first 3 lines and write the rest to another temporary file. Then delete the original and move and rename the temporary one to the original.

Or read all the contents in a List (Using Files.readAllLines or a BufferedReader), remove the first 3 and write it to the file again.

 

Good

oh my god, it is very complicated...
massacre...

and I have no further to look for information on the net ...

 

@tomecki1
Here, or google "java delete some lines from file".

 

Thanks
I'll try to find something...

@I Al Istannen

It is my code:

Code:

public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
     if (cmd.getName().equalsIgnoreCase("usunraport")) {
       
       File file = new File("zgloszenia.txt");
       StringBuilder sb = new StringBuilder();
       try (BufferedReader br = new BufferedReader(new FileReader("zgloszenia.txt"))) {
         String line;
         
         while ((line = br.readLine()) != null) {
           sender.sendMessage(line);
         }

       } catch (IOException e) {
         sender.sendMessage(ChatColor.RED + "Nie ma żadnych raportów!");
         sender.sendMessage(" ");
       
     }
       String[] lines = {};
       for (String emm : lines) {
         Writer.writeFile("zgloszenia.txt", emm);
       }
     }
     return true;
   }

and I'm reading a file and do not know what to do removed and overwrite...
Help me please.

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

 

Help me please!
how to search the many themes and nothing!

 

@tomecki1
I don't really understand your english, which I am sorry for :/

But currently you only read the file. Add a counter, which checks how many lines are written. If the counter is <= 3, continue. Else save the line in a String list (List<String>). Later just use Files.write to save it to the file again.

You can read about reading and writing here.

 

;(
@I Al Istannen
I tried in different ways

You are prompted for me?

I did so, but it does not work:

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Code:

if (cmd.getName().equalsIgnoreCase("usunraport")) {
             
       try (BufferedReader br = new BufferedReader(new FileReader("zgloszenia.txt"))) {
         String line;
         while ((line = br.readLine()) != null) {
           plik.add(line);
         }
         plik.remove(0);
         plik.remove(1);
         plik.remove(2);
         plik.remove(3);
         String line2;
         for(int i=0; i<plik.size(); i++){
         line2 = plik.get(i);
           sender.sendMessage(line2);
           Writer.writeFile("zmiany.txt", line2);
         }
     
       
       } catch (IOException e) {
         sender.sendMessage(ChatColor.RED + "Nie ma żadnych raportów!");
         sender.sendMessage(" ");
     
     }
     }

I think that arraylist can not be...

but I do not know how...

I don't know!!! ;(

 

Just going to put this in here, if you did want to use YAML which is nicer to look at for sure just is a little syntax sensitive that is always an option and you can just do set(path, "") to remove a section. There are many utilities in the resources section that allow you to make your own YAML file with little code.