Eclipse / JDBC - začiaočník – Java – Fórum – Programujte.com

dobrý den všetkým.

jave som sa začal venovat pred mesiacom, mám v nej ešte značné medzery. a to hlavne v použíaní prostredia, nastavovaí a podobne.

moentálne už druhý týžden sa snažím rozchodiť JDBC , googlil som ako som len vedel, ale na riešenie som neprišiel.

použitie mám základné :

import java.sql.Connection;

import java.sql.DriverManager;

		String url		= "jdbc:mysql://127.0.0.1:3309/";

		String db 		= "gwtmysql";

		String driver 	= "com.mysql.jdbc.Driver";

		String user 	= "test";

		String pass 	= "";

		url = url + db;

		

		Connection conn	= null;

		try {

			Class.forName(driver).newInstance();

			conn = DriverManager.getConnection(url, user, pass);

		} catch (Exception e) {

			System.err.println("Mysql Connection Error: ");

			e.printStackTrace();

		}

		if (conn == null)  {

			System.out.println("~~~~~~~~~~ can't get a Mysql connection");

		}else

		{

			System.out.println("~~~~~~~~~~ Mysql connection created");

		}

<?xml version="1.0" encoding="UTF-8"?>

<classpath>

	<classpathentry kind="src" path="src"/>

	<classpathentry kind="src" output="test-classes" path="test"/>

	<classpathentry kind="con" path="com.google.appengine.eclipse.core.GAE_CONTAINER"/>

	<classpathentry kind="con" path="com.google.gwt.eclipse.core.GWT_CONTAINER"/>

	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>

	<classpathentry kind="lib" path="C:/Users/mostka/workspace/lib/mysql-connector-java-5.1.12/mysql_connector.jar"/>

	<classpathentry kind="output" path="war/WEB-INF/classes"/>

</classpath>

Mysql Connection Error: 

java.sql.SQLException: java.lang.NoClassDefFoundError: java.net.InetAddress is a restricted 

class at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1075) ......................

SEVERE: [1276158786038000] javax.servlet.ServletContext log: Exception while dispatching incoming RPC call

com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract 

java.lang.String com.client.GreetingService.greetServer(java.lang.String) throws java.lang.IllegalArgumentException' 

threw an unexpected exception: java.lang.NoClassDefFoundError: com.mysql.jdbc.Driver is a restricted class. P

tak už to mám. používam totiž google apps. a to bola chyba. google app engine má nastavenú inú databázu.
takže stačilo z projektu odstránit plugin google app.