Insert 資料取得最新的ID

    // Insert one row that will generate an AUTO INCREMENT
    // key in the primary key field
    //
    stmt.executeUpdate(
            "INSERT INTO autoIncTest (comment) "
            + "values ('How can I get the auto increment field value?')",
            Statement.RETURN_GENERATED_KEYS);

    //
    // Use Statement.getGeneratedKeys()
    // to retrieve the value(s)
    //

    int autoIncValue = -1;

    rs = stmt.getGeneratedKeys();

    if (rs.next()) {
        autoIncValue = rs.getInt(1);
    } else {

        // Error
    }

    rs.close();

資料來源：
http://blog.taragana.com/index.php/archive/java-how-to-get-auto-increment-values-after-sql-insert/