How to read data from a file and splitting them into an array list (java)?

[hojiamin]

Data:

Shoes,(Description in String Type),Air Penny III,Nike,10,100
Shoes,(Description in String Type),Easy Rider III,Puma,9,99

public static ArrayList[] readFile(String filename){
String line = "";
ArrayList[] data = new ArrayList[5]; //create a new arraylist called data
 
try{
FileReader fr = new FileReader(filename); //create a filereader that read the file by its name
BufferedReader br = new BufferedReader(fr); //create a buffer around the reader
while((line = br.readLine()) != null){ //if the line read is not an "", arraylist will add 1 to its length
String[] theline = line.split(","); //split data by recognising the ","
data[0].add(theline[0]); //storing different categories of info of each row into an array
data[1].add(theline[1]); //e.g. data[3] stores brandname nike, addidas, puma
data[2].add(theline[2]);
data[3].add(theline[3]);
data[4].add(theline[4]);
data[5].add(theline[5]);
}
}
catch(FileNotFoundException e){ //catching possible errors
e.printStackTrace();
}
catch(IOException e){
System.out.println(e);
}
return data; //return the arraylist
}

I then receive an error and I don't know how to solve it.

I would also like to display data[3] into a JList too.

Please help, thanks.

[ThatThatGuy]

You can use StringTokenizer class to split the data

String Tokenizer splits a string which is being presented in either as comma separated values or seperated by some symbol

ArrayList lst=new ArrayList();
StringTokenizer st = new StringTokenizer("<data>", "<seperator symbol>"); 
//check for tokens
if(st.hasMoreTokens()
{
lst.add(st.nextToken());
//adding the data as tokens
}
 

This is how you can split up data and store it in list.

and one more thing

public static ArrayList[] readFile(String filename){
String line = "";
ArrayList[] data = new ArrayList[5]; //create a new arraylist called data

You shouldn't create an array of ArrayList.that's illogical