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string return statement

 
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If user in jTextField type "7Li", how I can get in output -> "7-Li-3"?
 
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What are the rules of the conversion?
Where did the "3" come from?
 
Tai Yo
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It is a from Periodic table, element Li (lithium) with atomic number 3 and mass 7.
 
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Tai Yo wrote:It is a from Periodic table, element Li (lithium) with atomic number 3 and mass 7.



Well, first, you will need access to the periodic table -- either directly defined in your program, loaded from somewhere such as a file or database, or access via some sort of service.

With that, all you need is to define the parsing rules (consistency of format), so you can parse it, find the element, lookup the atomic number and mass, and generate the result.

Henry
 
Tai Yo
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I should avoid periodic table loaded from file or database.
Is there another way to solve it, for example, mapping or ?
 
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Tai Yo wrote:I should avoid periodic table loaded from file or database.


Sounds like an assignment.

Is there another way to solve it, for example, mapping or ?


You could type in a map of the whole periodic table, but that would be a pain. If this is an assignment, do they really want you to do all that busy work? If not, loading a map from a file would be an intermediate step, and a database like SQLite would be the best solution.
 
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Tai Yo wrote:If user in jTextField type "7Li", how I can get in output -> "7-Li-3"?


You could do it with a Map.
 
Tai Yo
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Thank you very much Carey Brown.
HashMap solved my problem.
 
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