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How to append an entered Social Security number to xxx-xx-1111?

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-1

I am learning Java and am working on a program for a class. I've completed the bulk of the program so not much help is needed.

How can I convert a SSN (entered by scanner) from, 111-11-1111 to xxx-xx-1111?

I also need to validate that the format of the numbers entered is correct. There is a main class and an Astronaut class where I have getters and setters for the SSN. I already have a toString override method to format it the way I want when I run the program.

@Override
public String toString() 
 super.toString();
 System.out.println("SSN: " + ssn);
 return "";

java append tostring

share|improve this question

edited Mar 28 at 21:58

Steve

4,83511 gold badge88 silver badges3131 bronze badges

asked Mar 28 at 21:21

JavaLearner1234JavaLearner1234

111 bronze badge

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  What do you expect super.toString() to achieve?
  
  – PM 77-1
  Mar 28 at 21:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Aside from main question: toString() shouldn't be responsible for printing anything, but generating String representation of an object which then can be used as client want, for instance it can be printed. Using that logic your super.toString() would be redundant because it would return some value which you are ignoring. If your superclass really generates values which you want to also print along with your Astronaut then you probably wanted something like String parentStr = super.toString(); ...; return parentStr+other+elements;
  
  – Pshemo
  Mar 28 at 21:33
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Anyway easiest way to replacing single characters with other characters would be converting string to char[], modifying that char[], and creating new String(modifiedCharArray). You could also use substring method to get only part which you are interested in and concatenate it with mask.
  
  – Pshemo
  Mar 28 at 21:35
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I forgot to mention that the Astronaut is an extension of another class
  
  – JavaLearner1234
  Mar 28 at 22:02
  

  
  
  
  

add a comment
 | 

-1

I am learning Java and am working on a program for a class. I've completed the bulk of the program so not much help is needed.

How can I convert a SSN (entered by scanner) from, 111-11-1111 to xxx-xx-1111?

I also need to validate that the format of the numbers entered is correct. There is a main class and an Astronaut class where I have getters and setters for the SSN. I already have a toString override method to format it the way I want when I run the program.

@Override
public String toString() 
 super.toString();
 System.out.println("SSN: " + ssn);
 return "";

java append tostring

share|improve this question

edited Mar 28 at 21:58

Steve

4,83511 gold badge88 silver badges3131 bronze badges

asked Mar 28 at 21:21

JavaLearner1234JavaLearner1234

111 bronze badge

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  What do you expect super.toString() to achieve?
  
  – PM 77-1
  Mar 28 at 21:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Aside from main question: toString() shouldn't be responsible for printing anything, but generating String representation of an object which then can be used as client want, for instance it can be printed. Using that logic your super.toString() would be redundant because it would return some value which you are ignoring. If your superclass really generates values which you want to also print along with your Astronaut then you probably wanted something like String parentStr = super.toString(); ...; return parentStr+other+elements;
  
  – Pshemo
  Mar 28 at 21:33
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Anyway easiest way to replacing single characters with other characters would be converting string to char[], modifying that char[], and creating new String(modifiedCharArray). You could also use substring method to get only part which you are interested in and concatenate it with mask.
  
  – Pshemo
  Mar 28 at 21:35
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I forgot to mention that the Astronaut is an extension of another class
  
  – JavaLearner1234
  Mar 28 at 22:02
  

  
  
  
  

add a comment
 | 

I am learning Java and am working on a program for a class. I've completed the bulk of the program so not much help is needed.

How can I convert a SSN (entered by scanner) from, 111-11-1111 to xxx-xx-1111?

I also need to validate that the format of the numbers entered is correct. There is a main class and an Astronaut class where I have getters and setters for the SSN. I already have a toString override method to format it the way I want when I run the program.

@Override
public String toString() 
 super.toString();
 System.out.println("SSN: " + ssn);
 return "";

java append tostring

share|improve this question

edited Mar 28 at 21:58

Steve

4,83511 gold badge88 silver badges3131 bronze badges

asked Mar 28 at 21:21

JavaLearner1234JavaLearner1234

111 bronze badge

@Override
public String toString() 
 super.toString();
 System.out.println("SSN: " + ssn);
 return "";

share|improve this question

edited Mar 28 at 21:58

Steve

4,83511 gold badge88 silver badges3131 bronze badges

asked Mar 28 at 21:21

JavaLearner1234JavaLearner1234

111 bronze badge

share|improve this question

edited Mar 28 at 21:58

Steve

4,83511 gold badge88 silver badges3131 bronze badges

asked Mar 28 at 21:21

JavaLearner1234JavaLearner1234

111 bronze badge

edited Mar 28 at 21:58

Steve

4,83511 gold badge88 silver badges3131 bronze badges

edited Mar 28 at 21:58

Steve

4,83511 gold badge88 silver badges3131 bronze badges

asked Mar 28 at 21:21

JavaLearner1234JavaLearner1234

111 bronze badge

asked Mar 28 at 21:21

JavaLearner1234JavaLearner1234

111 bronze badge

2 Answers
2

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oldest

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1

You can do something like this:

@Override
public String toString() 
 return "SSN: XXX-XX-" + ssn.substring(7);

share|improve this answer

answered Mar 28 at 21:30

ipaveipave

42633 silver badges1212 bronze badges

add a comment
 | 

0

In order to validate that the number of digits entered is correct, you can use a regex expression. For example: ssn.matches("(\d-)?\d3-\d2-\d4")

share|improve this answer

answered Mar 28 at 21:49

AtroAtro

111 bronze badge

add a comment
 | 

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1

You can do something like this:

@Override
public String toString() 
 return "SSN: XXX-XX-" + ssn.substring(7);

share|improve this answer

answered Mar 28 at 21:30

ipaveipave

42633 silver badges1212 bronze badges

add a comment
 | 

1

You can do something like this:

@Override
public String toString() 
 return "SSN: XXX-XX-" + ssn.substring(7);

share|improve this answer

answered Mar 28 at 21:30

ipaveipave

42633 silver badges1212 bronze badges

add a comment
 | 

You can do something like this:

@Override
public String toString() 
 return "SSN: XXX-XX-" + ssn.substring(7);

share|improve this answer

answered Mar 28 at 21:30

ipaveipave

42633 silver badges1212 bronze badges

@Override
public String toString() 
 return "SSN: XXX-XX-" + ssn.substring(7);

share|improve this answer

answered Mar 28 at 21:30

ipaveipave

42633 silver badges1212 bronze badges

answered Mar 28 at 21:30

ipaveipave

42633 silver badges1212 bronze badges

answered Mar 28 at 21:30

ipaveipave

42633 silver badges1212 bronze badges

0

In order to validate that the number of digits entered is correct, you can use a regex expression. For example: ssn.matches("(\d-)?\d3-\d2-\d4")

share|improve this answer

answered Mar 28 at 21:49

AtroAtro

111 bronze badge

add a comment
 | 

0

In order to validate that the number of digits entered is correct, you can use a regex expression. For example: ssn.matches("(\d-)?\d3-\d2-\d4")

share|improve this answer

answered Mar 28 at 21:49

AtroAtro

111 bronze badge

add a comment
 | 

In order to validate that the number of digits entered is correct, you can use a regex expression. For example: ssn.matches("(\d-)?\d3-\d2-\d4")

share|improve this answer

answered Mar 28 at 21:49

AtroAtro

111 bronze badge

share|improve this answer

answered Mar 28 at 21:49

AtroAtro

111 bronze badge

answered Mar 28 at 21:49

AtroAtro

111 bronze badge

answered Mar 28 at 21:49

AtroAtro

111 bronze badge