package lab10;

import java.io.FileNotFoundException;
import java.util.Scanner;

/**
*
* @author
*/
public class Lab10 {

public static void main(String[] args) throws FileNotFoundException {

   /**
      * Check to see if there are two arguments entered, and if not, send an
      * error message to the console and exit. (Hint: You can test this using
      * args.length != 2.)
      */
   if (args.length != 2) {
         System.out.println("Error");
         System.exit(0);
   }

   // Create a File instance
   java.io.File inputFile = new java.io.File(args[0]);

   /**
      * Check to see if the input file exists, and if not, send an error
      * message to the console and then System.exit(0). (Hint:You can test
      * this using !inputFile.exists()
      */
   if (!inputFile.exists()) {
         System.out.println("Not found " + args[0]);
         System.exit(0);
   }

   // Create a Scanner for the file
   Scanner input = new Scanner(inputFile);

   int charNum = 0;
   int lineNum = 0;
   boolean javaExisted = false;
   // Read data from a file
   while (input.hasNext()) {
         lineNum++;
         /**
         * Using a Scanner object and while loops, you can read each line
         * from the input file using the hasNext and nextLine methods.
         */
         String line = input.nextLine();
         /**
         * The lengths of all lines added together will give you the overall
         * number of characters in the input file.
         */
         charNum += line.length();

         /**
         * To test for the “JAVA” string, you can flip each line to upper
         * case using the toUppercase method and use a Boolean to test to
         * see if the line contains “JAVA”. You can use either the
         * “contains” method in the String class to see if “JAVA” exists, or
         * see if the index (e.g. indexOf method) is greater than or equal
         * to 0.
         */
         line = line.toUpperCase();
         if (line.contains("JAVA") == true) {
            javaExisted = true;
         }
   }
   // Close the file
   input.close();

Name and Birthday For this lab, you will be manipulating a user’s...