How do i save unicodes through java in oracle

Assuming that thefollowing three strings make up a word in chinese how do i store al开发者_开发技巧l these together in a single field(as one word) in the oracle

 String code="\u6B32 ";
 String code1="\u8ECE";
 String code2="\u4F7F";

Thank you

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You can simply set the string as the parameter of a JDBC PreparedStatement. To store Unicode you will need ask your DBA to ensure that the Oracle instance is created using a Unicode character set such as UTF-8 (or, alternatively, that the NVARCHAR type uses a Unicode character set).

Suggested Oracle settings:

• NLS_CHARACTERSET: AL32UTF8
• NLS_LENGTH_SEMANTICS: CHAR

You can check the NLS parameters by issuing the following query:

select * from v$nls_parameters

Since you will be saving Chinese characters I suggest you read up on Unicode supplementary characters and their implementation in Oracle DB. Each Unicode character set stores supplementary characters differently, and this can have a significant affect on the size of your DB on disk. Also, length semantics can be more complicated because there is no longer a 1:1 relationship between # of code points and # of characters.

Further reading:

• Choosing a Character Set
• Supporting Multilingual Databases with Unicode
• Java Programming in a Global Environment
• Collation in Oracle using NLS_SORT

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This should be enaugth

 String word = "\u6B32\u8ECE\u4F7F";

 PreparedStatement pstmt = pstmt = conn.prepareStatement("INSERT INTO MY_TABLE(WORDS) VALUES(?)");
 pstmt.setString(1, word);

 pstmt.execute();
 pstmt.close();