Reading Numbers from a Text File, Line by Line : File Reader « File Input Output « Java

Reading Numbers from a Text File, Line by Line



public class SumLine {
  public static void main(String[] a)throws IOException {
  static void sumLines(String filename) throws IOException {
    LineNumberReader lnr = new LineNumberReader(new FileReader(filename));
    StreamTokenizer stok = new StreamTokenizer(lnr);
    while (stok.ttype != StreamTokenizer.TT_EOF) {
      int lineno = lnr.getLineNumber();
      double sum = 0;
      while (stok.ttype != StreamTokenizer.TT_EOL) {
        if (stok.ttype == StreamTokenizer.TT_NUMBER)
          sum += stok.nval;
      System.out.println("Sum of line " + lineno + " is " + sum);

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