Splitting a input file by colons? Java
public void loadAccts(){
        try{
              // Open the file that is the first
              // command line parameter

              FileInputStream fstream = new FileInputStream(chooseFile());

              // Get the object of DataInputStream
              DataInputStream in = new DataInputStream(fstream);
              BufferedReader br = new BufferedReader(new InputStreamReader(in));
              String strLine;
              //Read File Line By Line
              while ((strLine = br.readLine()) != null)   {
                  String[] values = strLine.split("n");

                  for (String str : values) {


                        txtUsers.append(strLine + "n");
                        System.out.println(values.toString());

                    }


              }
              //Close the input stream
              in.close();

                }catch (Exception e){//Catch exception if any
              System.err.println("Error: " + e.getMessage());
              }
    }

...
String namepass[] = strLine.split(":");
String name = namepass[0];
String pass = namepass[1];
// do whatever you want to name and pass
...

import java.util.ArrayList;
import java.util.List;

class Account {
    String username;
    String password;

    public Account(String username, String password) {
        super();
        this.username = username;
        this.password = password;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

}

class Solution {
    public static void main(String[] args) {
        while(.....){//read till the end of the file
            String input = //each line
            List<Account> accountsList = new ArrayList<Account>();
            String splitValues[] = input.split(":");
            Account account = new Account(splitValues[0], splitValues[1]);
            accountsList.add(account);
        }
        //perform your operations with accountList
    }
}