Driver in Jar classpath

my application is in App.jar
when running from command line >java -jar App.jar it is not finding the JDBC:MYSQL driver even though in the JAR manifest there is
Class-Path: .......\mysql-connector-java-3.2.0-alpha-bin.jar
as an absolute path from root.
Any ideas why not?
thanks

sounds like the Class-Path is set properly in the manifest, but the JAR isn't in the right place.
I wouldn't recommend making the path absolute from root. I'd make it relative to the location of the executable JAR.
I'll also assume that you know that you have to deploy all the 3rd party JARs along with the executable JAR, and that the 3rd party JARs are outside the executable JAR.
%

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How can i load microsoft SQL Server driver in the classpath ?

Hi
i need to have microsoft SQL Server driver in the classpath , how can i do that to run the following code :
String driver = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
Class.forName(driver);
with best regards

Just as information, if you need to load a JDBC driver dynamically without previously knowing its name (meaning you can't add it to the classpath manually in your startup batch), the following will not work:
// register the SQL driver as necessary
DriverManager.registerDriver(new com.microsoft.jdbc.sqlserver.SQLServerDriver());
// connect to the DB by using the driver.
String connString = "my_dbserver:1433;databasename=my_database";
String strDBConnect = "jdbc:microsoft:sqlserver://" + connString;
conn = DriverManager.getConnection(strDBConnect, userName, passwd);
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Above, the class will be loaded correctly, but getConnection will fail.
This behaviour costed me several hours while developing a dialog for adding drivers dynamically, until I saw the reason.
But a solution has been posted in the forums, which goes like this:
// jdbcLoader is my individual class loader, you can construct it with the driver url
Class driverClass = Class.forName(driverName, true, jdbcLoader);
currDriver = (Driver)driverClass.newInstance();
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Regards,
Christian Sy

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The following lines are included in my code
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You may need a later version of the driver:
http://www.dbforums.com/showthread.php?t=971271
Pl. also see:
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http://forum.java.sun.com/thread.jspa?threadID=300137&messageID=1189780

Installing a JDBC-driver in the classpath in win 2000

Hi
I'm trying to make an aplication, that can access a remote DataBase, with the mm.mysql driver.
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put it in your enviroment.
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Loading JDBC driver dynamicly (without CLASSPATH)

Problem:
Need loading driver for database MySQL without
using enviroment variable CLASSPATH.
I try this using URLClassLoader
URL []url = new URL[1];
url[0] = new URL("file:\\d:\\Sergei\\Work\\MySlateDB\\MySqlDriver\\mm.mysql-2.0.6.jar");
URLClassLoader loader = new URLClassLoader(url);
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Driver loading, but DriverManager do not register it.
Enumeration e is empty....
Connection cn = DriverManager.getConnection("jdbc:mysql:\\172.16.9.200\\astra?user=SERGEY&password=QWE");
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Why DriverManager do not register driver ?
if add jar-archive in CLASSPATH then all working.
How solve this problem ?
Best regards, Rinver.

You going to have to write your own version of DriverManager to do this. java.sql.DriverManager only uses the system classloader to load JDBC drivers.
You can get an example from here:
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/squirrel-sql/squirrel-sql/fw/src/net/sourceforge/squirrel_sql/fw/sql/
The files you are interested in are SQLDriverManager.java and SQLDriverClassLoader.java.
Col

How to add JDBC Driver to my CLASSPATH

Hi~
I use MySQL JDBC Driver in my program like that
Class.forName("com.mysql.jdbc.Driver");But when I try to run it, I got a ClassNoFound Exception,I hava add mysql-connector-java-5.0.3-bin.jar into my CLASSPATH, but it no use.How to fix it ?
Thanks for your time~ ^_^

Here's my code, Thank you very much. But I suggest that,you'd better write your own code to test it. Hehe,thanks~~
import java.sql.*;
import java.util.*;
import java.io.*;
public class DBTest {
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               e.printStackTrace();
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                     stat = conn.createStatement();
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                     System.out.println(result.getString(1));
               //      stat.executeUpdate("DROP TABLE Greetings");
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               e.printStackTrace();
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               try{
                    if(conn != null)
                         conn.close();
               }catch(SQLException e){
                    e.printStackTrace();
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Can't found Driver class, but CLASSPATH is set!!!

I know this must be a favorite, but I have searched for 2 hours and can't found a solution for my problem. when I call Class.forName("com.mysql.jdbc.Driver").newInstance(); it throws the following exception: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver.
I have set the CLASSPATH and in Netbeans I have the Driver in fact I can connect to the Database in the Services tag, but I can't connect to it when I run the application.
I have connector/j version 5.1.6
Java Version 1.6.0_03
LinuxMint.
Please help.

odrium wrote:
I know this must be a favorite, but I have searched for 2 hours and can't found a solution for my problem. when I call Class.forName("com.mysql.jdbc.Driver").newInstance(); it throws the following exception: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver.
I have set the CLASSPATH Believe the class loader - it can't find it. That means you did it incorrectly.
If CLASSPATH is an environment variable for you, I can assure you that it's incorrect. All IDEs and app servers ignore any CLASSPATH environment variables. It's worthless. I don't have one on any machine I work on.
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Main-Class: MyPackage.MyClass
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the application starts and executes properly right up until a class from someFolder is needed, at which point exceptions begin to be thrown.
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John Todd

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Include driver in jar file

Hi, i need include de jdbc driver for postgres en my jar application file...
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"jar xf xxxx.jar" will do the unpacking.
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My java oracle program runs fine as a class.
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Class.forName("oracle.jdbc.driver.
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Hi all,
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ps: I'm so disappointed with Sun's support on this forum & documentation on this new bridge stuff.
regards.
Erdem.

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If you want a class to be able to access other class you have the following 3 options:
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2. Put the additional class in a jar in the <jre>/lib/ext
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Hi All,
I am trying to deploy all my composite using AIA Install driver.
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Hence i would like to know at what step are the composite jar files created?
Appreciate your help on this.
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Amit,
in general, the AIA Install Driver does not support this split up into build and deployment. It is certainly technically feasible by tweaking the underlying ant / wlst scripts, but I also don't see why this would be useful. The 'deployment' action of AID consists of even more than build and deploy, namely adjusting the composite to match an environment, i.e. adjust references, URLs, etc. to match the current environment, e.g. when you take your code from dev to test.
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Starting app with -jar : classpath doesnt work

I have a jar file called netcdfAll.jar with this manifest:
Manifest-Version: 1.0
Created-By: Apache Ant 1.5.1
Main-Class: ucar.nc2.ui.ToolsUI
Class-Path: prefsAll.jar units.jar HTTPClient.jar jdom.jar
Built-By: john
Built-On: 2003-12-04 18:36:43
but i get this error
+ java -Xmx512m -jar netcdfAll.jar
Exception in thread "main" java.lang.NoClassDefFoundError: ucar/util/prefs/XMLStore
at ucar.nc2.ui.ToolsUI.main(ToolsUI.java:761)
but with no other changes this works:
+ java -Xmx512m -classpath netcdfAll.jar;prefsAll.jar;units.jar;HTTPClient.jar;jdom.jar ucar.nc2.ui.ToolsUI
sorry to be so stupid, but i cant seem to see whats wrong here. the manifest is not wrapping to the next line. can anyone help?
BTW, heres an octal dump:
$ od -bc MANIFEST.MF
0000000 115 141 156 151 146 145 163 164 055 126 145 162 163 151 157 156
M a n i f e s t - V e r s i o n
0000020 072 040 061 056 060 015 012 103 162 145 141 164 145 144 055 102
: 1 . 0 \r \n C r e a t e d - B
0000040 171 072 040 101 160 141 143 150 145 040 101 156 164 040 061 056
y : A p a c h e A n t 1 .
0000060 065 056 061 015 012 115 141 151 156 055 103 154 141 163 163 072
5 . 1 \r \n M a i n - C l a s s :
0000100 040 165 143 141 162 056 156 143 062 056 165 151 056 124 157 157
u c a r . n c 2 . u i . T o o
0000120 154 163 125 111 015 012 103 154 141 163 163 055 120 141 164 150
l s U I \r \n C l a s s - P a t h
0000140 072 040 160 162 145 146 163 101 154 154 056 152 141 162 040 165
: p r e f s A l l . j a r u
0000160 156 151 164 163 056 152 141 162 040 110 124 124 120 103 154 151
n i t s . j a r H T T P C l i
0000200 145 156 164 056 152 141 162 040 152 144 157 155 056 152 141 162
e n t . j a r j d o m . j a r
0000220 015 012 102 165 151 154 164 055 102 171 072 040 152 157 150 156
\r \n B u i l t - B y : j o h n
0000240 015 012 102 165 151 154 164 055 117 156 072 040 062 060 060 063
\r \n B u i l t - O n : 2 0 0 3
0000260 055 061 062 055 060 064 040 061 070 072 063 066 072 064 063 015
- 1 2 - 0 4 1 8 : 3 6 : 4 3 \r
0000300 012 015 012
\n \r \n
0000303

it appears to be a bug in ant, i have submitted an error report to them.
http://issues.apache.org/bugzilla/show_bug.cgi?id=25255
i will say that whatever is failing is not obvious, that the "good" and "bad" manifest files seem identical except for the ordering.
$ cat manifest.bad
Manifest-Version: 1.0
Created-By: Apache Ant 1.5.1
Main-Class: ucar.nc2.ui.ToolsUI
Class-Path: prefsAll.jar HTTPClient.jar units.jar jdom.jar
$ cat manifest.good
Manifest-Version: 1.0
Class-Path: prefsAll.jar HTTPClient.jar units.jar jdom.jar
Created-By: Apache Ant 1.5.1
Main-Class: ucar.nc2.ui.ToolsUI

Any easy way to set *.jars classpath in windows

Is any easy way to set the classpath for serveral jars in windows?
for example, if I have 1000 jars in a folder "C:/MyJar", is this the only way to set the classpath with:
CLASSPATH=C:/MyJar/Jar0001.jar; C:/MyJar/Jar0002.jar; C:/MyJar/Jar0003.jar; .........; C:/MyJar/Jar1000.jar
?

Is any easy way to set the classpath for serveral jars
in windows?
for example, if I have 1000 jars in a folder
"C:/MyJar", is this the only way to set the classpath
with:
CLASSPATH=C:/MyJar/Jar0001.jar; C:/MyJar/Jar0002.jar;
C:/MyJar/Jar0003.jar; .........; C:/MyJar/Jar1000.jar
?You shouldn't have a system CLASSPATH environment variable.
You don't add every JAR for every project to a system CLASSPATH. You should be doing it on a project-by-project basis, preferrably with a script or an Ant build.xml.
Doing it with a system environment variable makes your apps less portable, because now you depend on the target machine being set up in a particular way. You should figure out how to package your apps appropriately so clients don't have to worry about that setup issue.

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Driver in Jar classpath

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