how to read data from file into array? java
- by lox
I need some help reading data from a txt file into my ArrayList. I know the code is pretty messy, but just try to take a look at it. The first part with the creating and putting the ArrayList into the txt file works perfectly. I just need some help at the end in the "marked" area.
Sorry if I still have some words in my native language, but I didn't really had the time to translate everything.
public class ContAngajat {
String username;
String password;
}
public class CreazaCont {
// creating the arraylist and putting it into a file
public static void ang(String args[]) {
ArrayList<ContAngajat> angajati=new ArrayList<ContAngajat>(50);
Scanner diskScanner = new Scanner(in);
Scanner forn = new Scanner(in);
int n;
out.print("Introduceti numarul de conturi noi care doriti sa le introduceti: ");
n=forn.nextInt();
out.println();
try{
FileWriter fw = new FileWriter("ConturiAngajati.txt", true);
for(int i=0; i<n; i++){
ContAngajat cont = new ContAngajat();
out.print("Username: ");
cont.username=diskScanner.nextLine();
out.print("Password: ");
cont.password=diskScanner.nextLine();
angajati.add(cont);
fw.write(cont.username + " ");
fw.write(cont.password +"|");
}
fw.close();
}
catch(IOException ex){
System.out.println("Could not write to file");
System.exit(0);
}
for (int i=0; i<n; i++) {
out.println("username: " + angajati.get(i).username + " password: " +angajati.get(i).password );
}
}
// HERE I'M TRING TO GET THE ARRAYLIST OUT OF THE FILE
public static void RdAng(String args[]) {
ArrayList<ContAngajat> angajati=new ArrayList<ContAngajat>(50);
ContAngajat cont = new ContAngajat();
int count,i2,i;
try{
FileReader fr = new FileReader("ConturiAngajati.txt");
BufferedReader br = new BufferedReader(fr);
String line = "";
while((line=br.readLine())!=null) {
String[] theline=line.split("|");
count=theline.length;
for(i=0;i<theline.length;i++) {
String[] theword = theline[i].split(" ");
}
}
for(i2=0;i2<count;i2++) {
ContAngajat contrd = new ContAngajat();
// "ERROR" OVER HERE
for (int ird=0; ird <theword.length; ird++) {
cont.username=theword[0];
cont.password=theword[1];
// they keep telling me "theword cannot be resolved" whenever i try to run this
}
angajati.add(contrd);
}
}
catch(IOException ex){
System.out.println("Could not read to file");
System.exit(0);
}
}
}
