Writer.java

import java.util.Scanner;
import java.io.File;
import java.io.FileWriter;
import java.io.BufferedWriter;

public class Writer {

    /**
    *   Read text file, for each line remove leading spaces and replace them with a count
    *   of the number of spaces.  Requires a text file "Squeeze.txt".
    */

    public static void main(String args[]) {
        String theText = "";
        String line;
        int c;
        try {
            Scanner in = new Scanner(new File("Squeeze.txt"));
            while (in.hasNextLine()) {
                line = in.nextLine();
                c=0;
                while (line.startsWith(" ")) {
                    line = line.substring(1, line.length());
                    c++;
                } // while line
                if (c>0) {
                    theText += c;
                } // if
                theText += line + "\r\n";
            } // while in
        }
        catch(Exception e) {
            System.out.println("Error: " + e.getMessage());
        } // try/catch

        try {
            BufferedWriter bw = new BufferedWriter(new FileWriter(new File("Squeeze2.txt")));
            bw.write(theText);
            bw.close();
        }
        catch (Exception e) {
            System.out.println("Couldn't write to file!");
        } // try/catch

    } // main()

} // class Writer