Do You See Something Wrong With This?

Question

Im reading a text file through a command line along with a key word. I want to see how many times the key word appears in the text file. I used .readline() to read in one line of the text file at a time. I use StringTokenizer to separate into individual tokens and then do a comparison. My program compiles, but I receive stackOverflow error or something like that. Anything obvious?

Answer 1

Try this - it's just a different approach
(I've treated the variable 'found' as a double for testing accuracy)
import java.io.*;
public class FileReadAll
  public static void main(String[] args) throws IOException
    BufferedReader br = new BufferedReader(new FileReader("test.txt"));
    StringBuffer sb = new StringBuffer();
    String line,file,keyword;
    int fileStartLength,fileEndLength,keywordLength;
    double found;
    while ((line = br.readLine()) != null) sb.append(line+"\n");
    br.close();
    file = sb.toString();
    keyword = args[0];
    fileStartLength = file.length();
    keywordLength = keyword.length();
    file = file.replaceAll("\\b"+keyword+"\\b","");
    fileEndLength = file.length();
    found = (fileStartLength-fileEndLength)/(double)keywordLength;
    System.out.println("Keyword appears "+found+" times");
    System.exit(0);
}