Okay, I am getting really irritated because I realize this is something easy but at this point I am not sure what else to try. The program is simply supposed to create a Coin table that stores the names, quantities and values of coins. I had started off with starting the program from the command line but after not getting that to work I changed it up to execute in NetBeans. I keep getting the same error message though. I have searched for solutions and can't find the issue as my driver class appears to be what is required. I am currently using as the driver com.mysql.jdbc.Driver.
public class CoinDataBase {
static String file = "C:\\Users\\Dan\\Desktop\\database.properties.txt";
public static void main(String[] args) throws SQLException, IOException,
ClassNotFoundException {
SimpleDataSource.init(file);
Connection conn = SimpleDataSource.getConnection();
try
{
Statement stat = conn.createStatement();
stat.execute("CREATE TABLE Coin (Name VARCHAR(12),Value "
+ "DECIMAL(5,2),QTY DECIMAL(5,0),Value DECIMAL(5,2)"
+ ",Total DECIMAL(5,2))");
stat.execute("INSERT INTO Coin VALUES('Penny',.01,5,.05)");
stat.execute("INSERT INTO Coin VALUES('Nickel',.05,2,.10)");
stat.execute("INSERT INTO Coin VALUES('Dime',.10,3,.30)");
stat.execute("INSERT INTO Coin VALUES('Quarter',.25,2,.50)");
stat.execute("INSERT INTO Coin VALUES('Half Dollar',.50,3,1.50)");
stat.execute("INSERT INTO Coin VALUES('Dollar',1.00,2,2.00)");
ResultSet result = stat.executeQuery("SELECT * FROM Coin");
result.next();
System.out.println(result.getString("Name"));
}
finally
{
conn.close();
}
}
}
And my second class...
class SimpleDataSource {
private static String url, username, password;
static void init(String fileName) throws IOException, ClassNotFoundException
{
Properties props = new Properties();
FileInputStream in = new FileInputStream(fileName);
props.load(in);
String driver = props.getProperty("jdbc.driver");
url = props.getProperty("jdbc.url");
username = props.getProperty("jdbc.username");
if (username == null) username = "";
password = props.getProperty("jdbc,password");
if (password == null) password = "";
if (driver != null)
Class.forName(driver);
}
static Connection getConnection() throws SQLException{
return DriverManager.getConnection(url, username, password);
}
}
And the error message in full:
Exception in thread "main" java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:186)
at coindatabase.SimpleDataSource.init(SimpleDataSource.java:28)
at coindatabase.CoinDataBase.main(CoinDataBase.java:20)
Java Result: 1
I would really appreciate any help. I don't know where I am going wrong. I can connect and create a database by going through services in NetBeans so I don't think it is configured wrong.
1) Make sure oracle.jar is in your project's runtime classpath :
http://netbeans.org/kb/docs/java/project-setup.html
2) It's worth trying oracle.jdbc.Driver.OracleDriver
'Hope that helps