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So I am writing code that takes a character and returns its keypad number equivalent. (Think old-school alpha-numeric keypad)

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0

$begingroup$

The code I am using is below but I am not getting the character return, only the box with a q-mark.
public char getDigit(char letter) throws Exception

 switch (letter) 
 case 'a': case 'b': case 'c': case '2':
 return 2;
 case 'd': case 'e': case 'f': case '3':
 return 3;
 case 'g': case 'h': case 'i': case '4':
 return 4;
 case 'j': case 'k': case 'l': case '5':
 return 5;
 case 'm': case 'n': case 'o': case '6':
 return 6;
 case 'p': case 'q': case 'r': case 's': case '7':
 return 7;
 case 't': case 'u': case 'v': case '8':
 return 8;
 case 'w': case 'x': case 'y': case 'z': case '9':
 return 9;
 default:
 throw new IllegalArgumentException("Must be a letter or number on the Alpha-Numeric Keypad.");
 

I have checked that the input is correct, as an example, the character 'h'. I should get a return of '4'.
Can anyone help me to understand why I am not?

java

share

asked 6 mins ago

Justin HaydenJustin Hayden

1

New contributor

Justin Hayden is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

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add a comment | 

0

$begingroup$

The code I am using is below but I am not getting the character return, only the box with a q-mark.
public char getDigit(char letter) throws Exception

 switch (letter) 
 case 'a': case 'b': case 'c': case '2':
 return 2;
 case 'd': case 'e': case 'f': case '3':
 return 3;
 case 'g': case 'h': case 'i': case '4':
 return 4;
 case 'j': case 'k': case 'l': case '5':
 return 5;
 case 'm': case 'n': case 'o': case '6':
 return 6;
 case 'p': case 'q': case 'r': case 's': case '7':
 return 7;
 case 't': case 'u': case 'v': case '8':
 return 8;
 case 'w': case 'x': case 'y': case 'z': case '9':
 return 9;
 default:
 throw new IllegalArgumentException("Must be a letter or number on the Alpha-Numeric Keypad.");
 

I have checked that the input is correct, as an example, the character 'h'. I should get a return of '4'.
Can anyone help me to understand why I am not?

java

share

asked 6 mins ago

Justin HaydenJustin Hayden

1

New contributor

Justin Hayden is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

$begingroup$

The code I am using is below but I am not getting the character return, only the box with a q-mark.
public char getDigit(char letter) throws Exception

 switch (letter) 
 case 'a': case 'b': case 'c': case '2':
 return 2;
 case 'd': case 'e': case 'f': case '3':
 return 3;
 case 'g': case 'h': case 'i': case '4':
 return 4;
 case 'j': case 'k': case 'l': case '5':
 return 5;
 case 'm': case 'n': case 'o': case '6':
 return 6;
 case 'p': case 'q': case 'r': case 's': case '7':
 return 7;
 case 't': case 'u': case 'v': case '8':
 return 8;
 case 'w': case 'x': case 'y': case 'z': case '9':
 return 9;
 default:
 throw new IllegalArgumentException("Must be a letter or number on the Alpha-Numeric Keypad.");
 

I have checked that the input is correct, as an example, the character 'h'. I should get a return of '4'.
Can anyone help me to understand why I am not?

java

share

asked 6 mins ago

Justin HaydenJustin Hayden

1

New contributor

Justin Hayden is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

 switch (letter) 
 case 'a': case 'b': case 'c': case '2':
 return 2;
 case 'd': case 'e': case 'f': case '3':
 return 3;
 case 'g': case 'h': case 'i': case '4':
 return 4;
 case 'j': case 'k': case 'l': case '5':
 return 5;
 case 'm': case 'n': case 'o': case '6':
 return 6;
 case 'p': case 'q': case 'r': case 's': case '7':
 return 7;
 case 't': case 'u': case 'v': case '8':
 return 8;
 case 'w': case 'x': case 'y': case 'z': case '9':
 return 9;
 default:
 throw new IllegalArgumentException("Must be a letter or number on the Alpha-Numeric Keypad.");
 

share

asked 6 mins ago

Justin HaydenJustin Hayden

1

New contributor

Justin Hayden is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share

asked 6 mins ago

Justin HaydenJustin Hayden

1

New contributor

Justin Hayden is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 6 mins ago

Justin HaydenJustin Hayden

1

New contributor

Justin Hayden is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 6 mins ago

Justin HaydenJustin Hayden

1