I am working on a project where users can create a username and password, and then log-in to the system. Whenever a user creates a new username and password, they are saved into a text file "logins.txt" and each entry is separated by two empty lines, here is an example of the .txt file layout:
Username:admin
Password:password
Username:caro
Password:test
Our team is able to add new users and their passwords to the text file with no problem, but I am running into some issues with my next step. I need to figure out how to write a method that is able to find a matching username and password and delete it from the text file, prompted by the user.
void addData(String usr, String pswd){
try {
RandomAccessFile raf = new RandomAccessFile(f+"\\logins.txt", "rw");
for(int i=0;i<ln;i++){
raf.readLine();
}
//if condition added after video to have no lines on first entry
if(ln>0){
raf.writeBytes("\r\n");
raf.writeBytes("\r\n");
}
raf.writeBytes("Username:"+usr+ "\r\n");
raf.writeBytes("Password:"+pswd+ "\r\n");
} catch (FileNotFoundException ex) {
Logger.getLogger(Login.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(Login.class.getName()).log(Level.SEVERE, null, ex);
}
}
This is a snippet of the code we are using to add the new login information to the .txt file. So far for the delete method, all I have is: void deleteData(String usr,String pswd){}. I am just not sure how to go about deleting a username/password from the .txt file, any suggestions?
