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import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;
import java.io.StreamTokenizer;
public class SumLine {
public static void main(String[] a)throws IOException {
sumLines("file.txt");
}
static void sumLines(String filename) throws IOException {
LineNumberReader lnr = new LineNumberReader(new FileReader(filename));
lnr.setLineNumber(1);
StreamTokenizer stok = new StreamTokenizer(lnr);
stok.parseNumbers();
stok.eolIsSignificant(true);
stok.nextToken();
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;
stok.nextToken();
}
System.out.println("Sum of line " + lineno + " is " + sum);
stok.nextToken();
}
}
}
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