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about command line program

 
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hello java programmers

i have a problem on command line arguments , how to count whether entered argument('s) digit or letter .?

i did try but did not get solution ..

here is the code ::

 
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What is the error?

 
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Not sure if you want something like this:



Input arguments: ac15 b 1 2
Output:
Letters:[a, c, b]
Digits:[1, 5, 1, 2]

Input arguments: 1 4 v b
Output:
Letters:[v, b]
Digits:[1, 4]
 
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