How to slove the character-converting problem?

I'm developing a Japanese Application.
In jsp , i get the string "6-2-3" which is all input by Japanese. But after i sent it to JavaBean as a parameter,it turned out to be "6?2?3". I 'm really confused by it.
By the way , how to get a character's unicode in java?

the primitive type char is used to store unicode values (\u0000 to \uFFFF, so 0 to 65335). java.lang.String are composed of char and so are unicode aware too. To get chars from your string you have 2 possibilities:
- String.toCharArray()
- String.getChar(int)
About having a japanese user input of "6-2-3" and getting in your bean "6?2?3", that's definitely an encoding problem. The user input field does not use the ame encoding as your javaBean, so that's why one generate char that are not well understood by your bean. I'm sorry, I only know the problem, but not the solution.

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How to slove the character-converting problem?

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