Question

This Exercise contains two classes: ValidateTest and Validate. The Validate class uses try-catch and Regex expressions in methods to test data passed to it from the ValidateTest program.

Please watch the related videos listed in Canvas and finish creating the 3 remaining methods in the class.

The regular expression you will need for a Phone number is:
"^\\(?(\\d{3})\\)?[- ]?(\\d{3})[- ]?(\\d{4})$"
and for an SSN:
"^\\d{3}[- ]?\\d{2}[- ]?\\d{4}$"

This exercise is meant to be done with the video listed in the Assignment page for Week 10.

What I have so far:

import java.util.*;
import java.util.regex.*;

/**
* Enter JavaDoc Class information here
* Include a description of what this class does!!!
* Make sure you include your full name
* Filename: ValidateTest.java
*/

public class ValidateTest {

public static void main(String[] args) {
Validate validate = new Validate();

int id = validate.collectInt("Please enter the ID of the item:");
String firstName = validate.collectString(2, "Please enter the first "
+ "name of the individual");
String lastName = validate.collectString(3, "Please enter the last "
+ "name of the individual");
String email = validate.collectEmail("Please enter the email address");
String phone = validate.collectPhone("Please enter the phone Number\n"
+ "Like (123) 456-7890 or 1234567890 or 123-456-7890");
String zipcode = validate.collectZip("Please enter the zipcode");
String ssn = validate.collectSsn("Please enter the SSN");
double wage = validate.collectDouble("Please enter the hourly wage");

System.out.print(String.format("id: %s\nName: %s %s\nEmail: %s\n"
+ "Phone: %s\nZipCode: %s\n SSN: %s\nWage:%s\n\n",
id, firstName, lastName, email, phone, zipcode, ssn, wage));

} // end main method

} // end class ValidateTest

//************************************************************
//** Validate Class is below this box **
//************************************************************
/**
* Enter JavaDoc Class information here
* Include a description of what this class does!!!
* Make sure you include your full name
* Filename: Validate.java
*/

class Validate {

private Scanner input;

/**
* JavaDoc method comment here
*
*/
public Validate() {
input = new Scanner(System.in);
}
  
/**
* enter JavaDoc Comments
*/
public int collectInt(String messageIn) {
int intOut = 0;
boolean valid = false;

System.out.println(messageIn);
do {
try {
intOut = input.nextInt();
input.nextLine();
valid = true;
} catch (InputMismatchException e) {
input.nextLine();
System.out.println("This requires a whole number!");
} // end catch
} while (!valid);
return intOut;
} // end collectInt

/**
* enter JavaDoc comments
*/
public String collectString(int strLen, String messageIn) {
String outStr = "";
boolean valid = false;

System.out.println(messageIn);
do {
try {
outStr = input.nextLine();
if (outStr.length() < strLen) {
throw new Exception();
}
valid = true;
} catch (Exception e) {
System.out.printf("This requires more than %d charachters\n", strLen);
} // end Catch
} while (!valid);
return outStr;
}

/**
* enter JavaDoc comments
*/
public String collectEmail(String messageIn) {
String expression = "^[\\w\\-]([\\.\\w])+[\\w]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);

String outStr = "";
boolean valid = false;
System.out.println(messageIn);
do {
try {
outStr = input.nextLine();

Matcher m = pattern.matcher(outStr);
if (!m.matches()) {
throw new Exception();
}
valid = true;
} catch (Exception e) {
System.out.printf("Please enter a valid email address\n");
} // end catch
} while (!valid);// end while
return outStr;
}

/** create collectPhone method here using the supplied phone regex expression
* that, like the collectEmail method, tests the pattern and returns the a
* phone number string  
*/

/** create a collectZip method here. It can be done by checking for an integer
* that's at least 5 characters long or reading up on regex expressions and
* using your own regex expression to create the test pattern.  
*/

/** create collectSsn method here that like the collectEmail method, testa a
* string to make sure it matches a social security number based on the
* regex expression.
*/
  
/** create collectdouble method here that, like the collectInt method, tests
* the a string to make sure it is a double value or requests the value again
* A double value would be like 15.55
*/

} // end class Validate

Answer 1

Please find my implementation:

import java.util.*;

import java.util.regex.*;

/**

* Created:

* Author:

* FileName:

*/

public class ValidateTest {

public static void main(String[] args) {

Validate validate = new Validate();

int id = validate.collectInt("Please enter the ID of the item:");

String firstName = validate.collectString(2, "Please enter the first "

+ "name of the individual");

String lastName = validate.collectString(3, "Please enter the last "

+ "name of the individual");

String email = validate.collectEmail("Please enter the email address");

String phone = validate.collectPhone("Please enter the phone Number\n"

+ "Like (123) 456-7890 or 1234567890 or 123-456-7890");

String zipcode = validate.collectZip("Please enter the zipcode");

String ssn = validate.collectSsn("Please enter the SSN");

double wage = validate.collectDouble("Please enter the hourly wage");

System.out.print(String.format("id: %s\nName: %s %s\nEmail: %s\n"

+ "Phone: %s\nZipCode: %s\n SSN: %s\nWage:%s\n\n",

id, firstName, lastName, email, phone, zipcode, ssn, wage));

} // end main method

} // end class ValidateTest

//************************************************************

//** Validate Class is below this box **

//************************************************************

class Validate {

private Scanner input;

public Validate() {

input = new Scanner(System.in);

}

public int collectInt(String messageIn) {

int intOut = 0;

boolean valid = false;

System.out.println(messageIn);

do {

try {

intOut = input.nextInt();

input.nextLine();

valid = true;

} catch (InputMismatchException e) {

input.nextLine();

System.out.println("This requires a whole number!");

} // end catch

} while (!valid);

return intOut;

} // end collectInt

public String collectString(int strLen, String messageIn) {

String outStr = "";

boolean valid = false;

System.out.println(messageIn);

do {

try {

outStr = input.nextLine();

if (outStr.length() < strLen) {

throw new Exception();

}

valid = true;

} catch (Exception e) {

System.out.printf("This requires more than %d charachters\n", strLen);

} // end Catch

} while (!valid);

return outStr;

}

public String collectEmail(String messageIn) {

String expression = "^[\\w\\-]([\\.\\w])+[\\w]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";

Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);

String outStr = "";

boolean valid = false;

System.out.println(messageIn);

do {

try {

outStr = input.nextLine();

Matcher m = pattern.matcher(outStr);

if (!m.matches()) {

throw new Exception();

}

valid = true;

} catch (Exception e) {

System.out.printf("Please enter a valid email address\n");

} // end catch

} while (!valid);// end while

return outStr;

}

public String collectPhone(String number) {

String expression = "^\\(?(\\d{3})\\)?[- ]?(\\d{3})[- ]?(\\d{4})$";

Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);

String outStr = "";

boolean valid = false;

System.out.println(number);

do {

try {

outStr = input.nextLine();

Matcher m = pattern.matcher(outStr);

if (!m.matches()) {

throw new Exception();

}

valid = true;

} catch (Exception e) {

System.out.printf("Please enter a valid phone number\n");

} // end catch

} while (!valid);// end while

return outStr;

}

/* create a collectZip method here. It can be done by checking for an integer

* that's at least 5 characters long or reading up on regex expressions and

* using your own regex expression to create the test pattern.

*/

public String collectZip(String zip) {

String expression = "[0-9]{5}(?:-[0-9]{4})?$";

Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);

String outStr = "";

boolean valid = false;

System.out.println(zip);

do {

try {

outStr = input.nextLine();

Matcher m = pattern.matcher(outStr);

if (!m.matches()) {

throw new Exception();

}

valid = true;

} catch (Exception e) {

System.out.printf("Please enter a valid zip code\n");

} // end catch

} while (!valid);// end while

return outStr;

}

/* create collectSsn method here that like the collectEmail method, testa a

* string to make sure it matches a social security number based on the

* regex expression.

*/

public String collectSsn(String ssn) {

String expression = "^\\d{3}[- ]?\\d{2}[- ]?\\d{4}$";

Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);

String outStr = "";

boolean valid = false;

System.out.println(ssn);

do {

try {

outStr = input.nextLine();

Matcher m = pattern.matcher(outStr);

if (!m.matches()) {

throw new Exception();

}

valid = true;

} catch (Exception e) {

System.out.printf("Please enter a valid Ssn\n");

} // end catch

} while (!valid);// end while

return outStr;

}

/* create collectdouble method here that, like the collectInt method, tests

* the a string to make sure it is a double value or requests the value again

* A double value would be like 15.55

*/

public double collectDouble(String messageIn) {

String expression = "^\\d{3}[- ]?\\d{2}[- ]?\\d{4}$";

Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);

double outStr = 0;

boolean valid = false;

System.out.println(messageIn);

do {

try {

outStr = input.nextDouble();

input.nextLine();

valid = true;

} catch (Exception e) {

System.out.printf("Please enter a valid double number\n");

} // end catch

} while (!valid);// end while

return outStr;

}

} // end class Validate