Question

I’d like to split a string into an ArrayList.
Example:

String = “Would you like to have responses to your questions”
result with amount 3: Wou -> arraylist, ld -> arraylist, you -> arraylist, …

the amount is a predefined variable.

so far:

public static void analyze(File file) {

    ArrayList<String> splittedText = new ArrayList<String>();

    StringBuffer buf = new StringBuffer();
    if (file.exists()) {
        try {
            FileInputStream fis = new FileInputStream(file);
            InputStreamReader isr = new InputStreamReader(fis,
                    Charset.forName("UTF-8"));
            BufferedReader reader = new BufferedReader(isr);
            String line = "";
            while ((line = reader.readLine()) != null) {
                buf.append(line + "\n");
                splittedText.add(line + "\n");
            }
            reader.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    String wholeString = buf.toString();

    wholeString.substring(0, 2); //here comes the string from an txt file
}

Answer 1

You are adding each line to your array list, and it doesn’t sound like that is what you want. I think you are looking for something like this:

int i = 0;
for( i = 0; i < wholeString.length(); i +=3 )
{
    splittedText.add( wholeString.substring( i, i + 2 ) );
}
if ( i < wholeString.length() )
{
    splittedText.add( wholeString.substring( i ) );
}