Java read large text file with separator

Question

I\'m trying to read a large text file in the form of:

datadfqsjmqfqs+dataqfsdqjsdgjheqf+qsdfklmhvqziolkdsfnqsdfmqdsnfqsdf+qsjfqsdfmsqdjkgfqdsfqdfsqdfqdfssdqd         


        

Answer 1

It seems to me like your problem is that you don't want to read the file line by line. So instead, try reading it in parts (say 20 characters each time and building your string):

char[] c = new char[20]; //best to save 20 as a final static somewhere

ArrayList strings = new ArrayList();
StringBuilder sb = new StringBuilder();

BufferedReader br = new BufferedReader(new FileReader(filename));

while (br.read(c) == 20) {

    String str = new String(c);

    if (str.contains("+") {

        String[] parts = str.split("\\+");
        sb.append(parts[0]);
        strings.add(sb.toString());

        //init new StringBuilder:
        sb = new StringBuilder();
        sb.add(parts[1]);

    } else {
        sb.append(str);
    }
}