Compiling with mysql

Tue Sep 2 14:58:00 GMT 2008

A simple example
import java.sql.*;
public class MysqlConnect{
 public static void main(String[] args) {
 System.out.println("MySQL Connect Example.");
 Connection conn = null;
 String url = "jdbc:mysql://localhost:3306/";
 String dbName = "myDatabase";
 String driver = "com.mysql.jdbc.Driver";
 String userName = "root"; 
 String password = "root";
 try {
 Class.forName(driver).newInstance();
 conn = DriverManager.getConnection(url+dbName,userName,password);
 System.out.println("Connected to the database");
 conn.close();
 System.out.println("Disconnected from database");
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
}
in ubuntu i compile:
javac MysqlConnect.java
execution:
java MysqlConnect
output:
MySQL Connect Example.
com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in
your SQL syntax; check the manual that corresponds to your MySQL server
version for the right syntax to use near '????????????????????????????????'
at line 1
 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936)
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)
 at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
 at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
 at com.mysql.jdbc.Connection.execSQL(Connection.java:3277)
 at
com.mysql.jdbc.Connection.configureClientCharacterSet(Connection.java:2525)
 at
com.mysql.jdbc.Connection.initializePropsFromServer(Connection.java:4139)
 at com.mysql.jdbc.Connection.createNewIO(Connection.java:2789)
 at com.mysql.jdbc.Connection.<init>(Connection.java:1555)
 at
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
 at java.sql.DriverManager.getConnection(libgcj.so.90)
 at java.sql.DriverManager.getConnection(libgcj.so.90)
 at MysqlConnect.main(MysqlConnect.java:14)
$ java -version
java version "1.5.0"
gij (GNU libgcj) version 4.3.1
Please any idea ?
ezer wrote:
>> Now i am trying diferent. i generated an .o file with mysql driver and get
> an error, that error was the same when i try to run the applicatyion using
> the java from gcj without generating native code.
>> java -jar Myapp.jar
>>> You have an error in your SQL syntax; check the manual that corresponds to
> your MySQL server version for the right syntax to use near
> '????????????????????????????????' at line 1
> com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in
> your SQL syntax; check the manual that corresponds to your MySQL server
> version for the right syntax to use near
> '????????????????????????????????' at line 1
> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936)
> at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)
> at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
> at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
> at com.mysql.jdbc.Connection.execSQL(Connection.java:3277)
> at
> com.mysql.jdbc.Connection.configureClientCharacterSet(Connection.java:2525)
> at
> com.mysql.jdbc.Connection.initializePropsFromServer(Connection.java:4139)
> at com.mysql.jdbc.Connection.createNewIO(Connection.java:2789)
> at com.mysql.jdbc.Connection.<init>(Connection.java:1555)
> at
> com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
> at java.sql.DriverManager.getConnection(libgcj.so.90)
> at java.sql.DriverManager.getConnection(libgcj.so.90)
> at xx.yy.dao.DAO.getConnection(DAO.java:103)
>>> $ java -version
> java version "1.5.0"
> gij (GNU libgcj) version 4.3.1
>>> The same execution with the sam jar under win xp runs fine
>>>> ezer wrote:
>>>> I am triyng for a week to compile a project using mysql. I get all kind
>> of errors. 
>> i used mysql-connector-java-3.1.14-bin.jar,
>> mysql-connector-java-5.1.6-bin.jar and mysql-connector-java-5.1.6-bin.jar
>> I use something like that gcj --main=MyMainClass -o MyExec MyJar.jar
>> The MyJar i tryed to generate with all the java versions, 1.4, 15 and 1.6
>>>> I searched the net for info but i couldnt find anything...
>>>>
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