Hopeing someone can explain the error im getting

Question

The error I am getting is this:
C:\P2_Methods_DataFile.java:45: cannot find symbol
symbol : method readDataFile(P2_Methods_DataFile.Pack4Int)
location: class P2_Methods_DataFile
fileFlag = readDataFile (myValue);
^
1 error
Process completed.
The code is as follow, im sorry i forget how to make it show up colored
import java.util.Scanner;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
public class P2_Methods_DataFile
// ==================== method main ====================
public static void main (String[] args)
int myAge = 0;
int fileFlag = 0;
// Declare a reference to Pack4Int and set to null
Pack4Int myValue = null;
// Allocate storage for a Pack4Int & assign reference to myValue
myValue = new Pack4Int ();
// Call the readDataFile method to read data from a file
fileFlag = readDataFile (myValue);
// If fileFlag equals 1, the data file exists.
if (fileFlag == 1)
myAge = myValue.get_intValue ();
outputInfo (myAge);
// Always have this output statement at the end of main.
System.out.println ("\n\n\n\n");
return;
// End of public static void mail
// ==================== method readDataFile ====================
METHOD DESCRIPTION:
This method assigns a data file, reads an int value from the data file,
and returns the value through the parameter list.
If the assigned data file exists, the method returns 1 (one).
Otherwise, it returns 0 (zero).
public static int readDataFile (Pack4Int myData_int)
int age;
int dataFileFlag = 1;
Scanner scanInput = null; // Create a Scanner called scanInput.
try
// Assign data file to scanInput
scanInput = new Scanner
(new FileInputStream ("P2_Methods_DataFile.dat"));
// If file assignment is successful, execute the following.
// Otherwise execute catch.
// Input age from assigned data file
age = scanInput.nextInt ();
// Assign age to the object myData_int
myData_int.set_intValue (age);
scanInput.close();
catch (FileNotFoundException e)
System.out.println ("\n\n\n\n"
+ "**** The following data file was not found. ****");
System.out.println
( "**** P2_Methods_DataFile.dat ****");
dataFileFlag = 0;
finally // If file was assigned, free the file.
if (scanInput != null)
scanInput.close();
return dataFileFlag;
}     // End of public static int readDataFile
// ==================== method outputinfo ====================
METHOD DESCRIPTION:
This method prints an outline of program items and then information
about the programmer.
public static void outputInfo (int age)
// Display text in command window.
System.out.println ("\n\n\n\n My First Java Program that "
+ "Uses Methods & Data File Input\n");
System.out.println (" Input Method: ");
System.out.println (" 1. Uses one object parameter.");
System.out.println (" 2. Assigns a data file.");
System.out.println (" 3. Checks the existence of the data file.");
System.out.println (" 4. Reads a value from the data file.");
System.out.println (" 5. Returns teh value to method main using "
+ "a parameter.\n");
System.out.println (" Output Method:");
System.out.println (" 1. Uses one input parameter.");
System.out.println (" 2. Prints outline information.");
System.out.println (" 3. Prints information about the programmer.\n\n");
System.out.println ( " Name: Chase LeBlanc #35");
System.out.println ( " Course: CSC 102.004");
System.out.println ( " Due Date: October 2, 2007");
System.out.println ( " My Age: " + age);
return;
} // End of public static void outputInfo
// ==================== class Pack4Int ====================
CLASS DESCRIPTION:
An object of this type is used as a parameter in a method to return a
value of type int to the calling program.
public static class Pack4Int
private int intValue = 0;
// Method used to assign a value to intValue.
void set_intValue (int value)
intValue = value;
return;
// Method used to get an int value from age.
int get_intValue ()
return intValue;
} // End of public static class Pack4Int
} // End of public class P2_Methods_DataFile

Answer 1

import java.util.Scanner;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
public class P2_Methods_DataFile
//  ====================  method main  ====================
     public static void main (String[] args)
          int myAge = 0;
          int fileFlag = 0;
                  // Declare a reference to Pack4Int and set to null
          Pack4Int myValue = null;
                  // Allocate storage for a Pack4Int & assign reference to myValue
          myValue = new Pack4Int ();
                  // Call the readDataFile method to read data from a file
          fileFlag = readDataFile (myValue);
                  // If fileFlag equals 1, the data file exists.
          if (fileFlag == 1)
               myAge = myValue.get_intValue ();
               outputInfo (myAge);
                  // Always have this output statement at the end of main.
          System.out.println ("\n\n\n\n");
          return;
                  // End of public static void mail
// ====================  method readDataFile  ====================
METHOD DESCRIPTION:
    This method assigns a data file, reads an int value from the data file,
    and returns the value through the parameter list.
    If the assigned data file exists, the method returns 1 (one).
    Otherwise, it returns 0 (zero).
    public static int readDataFile (Pack4Int myData_int)
        int age;
        int dataFileFlag = 1;
        Scanner scanInput = null;     // Create a Scanner called scanInput.
        try
                    // Assign data file to scanInput
            scanInput = new Scanner
                (new FileInputStream ("P2_Methods_DataFile.dat"));
                // If file assignment is successful, execute the following.
                // Otherwise execute catch.
                        // Input age from assigned data file
            age = scanInput.nextInt ();
                        // Assign age to the object myData_int
            myData_int.set_intValue (age);
            scanInput.close();
        catch (FileNotFoundException e)
            System.out.println ("\n\n\n\n"
                    + "****  The following data file was not found.  ****");
            System.out.println
                    ( "****  P2_Methods_DataFile.dat                 ****");
            dataFileFlag = 0;
        finally     // If file was assigned, free the file.
            if (scanInput != null)
                scanInput.close();
        return dataFileFlag;
    }            // End of public static int readDataFile
// ====================  method outputinfo  ====================
METHOD DESCRIPTION:
    This method prints an outline of program items and then information
    about the programmer.
    public static void outputInfo (int age)
                           // Display text in command window.
        System.out.println ("\n\n\n\n My First Java Program that "
                + "Uses Methods & Data File Input\n");
        System.out.println (" Input Method: ");
        System.out.println (" 1. Uses one object parameter.");
        System.out.println (" 2. Assigns a data file.");
        System.out.println (" 3. Checks the existence of the data file.");
        System.out.println (" 4. Reads a value from the data file.");
        System.out.println (" 5. Returns teh value to method main using "
                + "a parameter.\n");
        System.out.println (" Output Method:");
        System.out.println (" 1. Uses one input parameter.");
        System.out.println (" 2. Prints outline information.");
        System.out.println (" 3. Prints information about the programmer.\n\n");
        System.out.println (        "     Name: Chase LeBlanc #35");
        System.out.println (        "   Course: CSC 102.004");
        System.out.println (        " Due Date: October 2, 2007");
        System.out.println (        "   My Age: " + age);
        return;
    }           // End of public static void outputInfo
// ====================  class Pack4Int  ====================
CLASS DESCRIPTION:
    An object of this type is used as a parameter in a method to return a
    value of type int to the calling program.
    public static class Pack4Int
        private int intValue = 0;
                // Method used to assign a value to intValue.
        void set_intValue (int value)
            intValue = value;
            return;
                // Method used to get an int value from age.
        int get_intValue ()
            return intValue;
    }           // End of public static class Pack4Int
}              // End of public class P2_Methods_DataFile
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