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Switch Case Problem  RSS feed

 
Greenhorn
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i had written a small code for calculator using switch case & getting the values at runtime. But multiplication is not happening.


what can be the solution for it?
 
Sheriff
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Welcome to JavaRanch, Mohsin

Please UseAMeaningfulSubjectLine when you post anything on JavaRanch. Also please UseCodeTags when you post a source code - It's unnecessarily hard to read the code otherwise. I've edited your post accordingly.

Getting into your question, what did you mean by "multiplication is not happening.", are you getting any exception, incorrect result, or something else? Please TellTheDetails.
 
Ranch Hand
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Hi mohsin

it seems that reading from consol as string * loss his identity. so convert in chararray and then use the first position value as operation.
 
Mohsin Shaikh
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Thanks Devaka,

"Multiplication not happening" - by that i mean, its not giving any error but it is taking the program flow to default statement. Therefore unable to get multiplication result.



calc.jpg
[Thumbnail for calc.jpg]
Output
 
Marshal
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I suggest you find out what the JVM thinks args[2].charAt(0) is . . .

Insert this line before the switch block and see what it prints.
System.out.printf("args[2].charAt(0) = %c%n", args[2].charAt(0)); //test code
 
Greenhorn
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put a print statement like this,


and see the result. if you don't quote your asterix "*" when you pass in your arguments, it will do a shell expansion.
so quote your "*" when you pass in as argument
 
Mohsin Shaikh
Greenhorn
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@Jave - your name is almost Java & your post worked for me, Thanks
@Campbell Ritchie - Thanks
@Ravi - Thanks for your reply...

enJoy Guys!!
 
Campbell Ritchie
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You're welcome
 
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