Problems with CLASSPATH

Quote:

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Originally Posted by Norm

Where is the file: first.class? The java program is looking for it.
Perhaps you need to add to the classpath to include the current directory.
Try this, add a ;. to the end of the -cp:
java -cp "D:\Sun\SDK\sqlitejdbc-v056.jar";. first[

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Hi,
I read with attention yr recommendation and of course it works. Normally I use Scite editor when working in java.
My program in java is very similar to that of the former inquirer and it works when using the windows md-dos console
in the way you say (java -cp "C:\....\sqlitejdbc-v056.jar";. ConnectSQLite)
But when I try to register the path of sqlitjdbc-v056.jar in the CLASSPATH environment variable and try to
run the same program through Scite, it doesnt work and gives the usual excepcion...

java.lang.ClassNotFoundException: org.sqlite.JDBC
at java.net.URLClassLoader$1.run(URLClassLoader.java: 202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 07)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 48)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at ConnectSQLite.main(ConnectSQLite.java:23)
java.lang.NullPointerException
at ConnectSQLite.main(ConnectSQLite.java:37)

I don't know what I'm doing wrong.
Thanks in any way you could help.http://www.java-forums.org/images/smilies/skype/=(.gif
:=(:

Please start a new thread for your problem.

Include the console contents when you post.
To copy the contents of the command prompt window:
Click on Icon in upper left corner
Select Edit
Select 'Select All' - The selection will show
Click in upper left again
Select Edit and click 'Copy'

Paste here.

Quote:

---

Originally Posted by Norm

Please start a new thread for your problem.

Include the console contents when you post.
To copy the contents of the command prompt window:
Click on Icon in upper left corner
Select Edit
Select 'Select All' - The selection will show
Click in upper left again
Select Edit and click 'Copy'

Paste here.

---

Thanks for yr reply

This is the program:

**
* ConnectSQLite.java
*/
//package com.javaworkspace.connectsqlite;

import java.sql.*;

/**
* @author
*
*/
public class ConnectSQLite {
public static void main(String[] args) {

Connection connection = null;
ResultSet resultSet = null;
Statement statement = null;

try {
Class.forName("org.sqlite.JDBC");
connection = DriverManager
.getConnection("jdbc:sqlite:C:\\Program Files\\Java\\jre6\\lib\\EMPLOYEE.db");
statement = connection.createStatement();
resultSet = statement
.executeQuery("SELECT EMPNAME FROM EMPLOYEEDETAILS");
while (resultSet.next()) {
System.out.println("EMPLOYEE NAME:"
+ resultSet.getString("EMPNAME"));
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
resultSet.close();
statement.close();
connection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}

The program compiles oK but when running it (on Scite editor) this is the message:
>C:\Archivos de programa\Java\jdk1.6.0_21\bin\javac ConnectSQLite.java
>Exit code: 0
>C:\Archivos de programa\Java\jdk1.6.0_21\bin\java -cp . ConnectSQLite
java.lang.ClassNotFoundException: org.sqlite.JDBC
at java.net.URLClassLoader$1.run(URLClassLoader.java: 202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 07)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 48)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at ConnectSQLite.main(ConnectSQLite.java:20)
java.lang.NullPointerException
at ConnectSQLite.main(ConnectSQLite.java:34)
>Exit code: 0


This source java program is in directory:
C:\Users\Claudio\Desktop\PROGRAMAR\JAVA\MiProyecto

These are the CURRENT values of my system variables:
CLASSPATH:
.;C:\Program Files\Java\jdk1.6.0_21;C:\Program Files\Java\jre6\lib\sqlitejdbc-v056.jar;.;%DERBY_HOME%\lib\derby.jar;.;C:\Users\C laudio\Desktop\PROGRAMAR\JAVA\MiProyecto\SimpleApp ;.

JAVA_HOME:
C:\Program Files\Java\jre6

PATH:
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\Sy stem32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShel l\v1.0\;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;c:\Program Files\Java\jdk1.6.0_21\bin


Many thanks in advance for your help.
(P.D.: I've never had more problems than when trying to install and use any database system in java.
I have experience in installing and using PostgreSQL but not in Java. I used it with Python.
I've installed SQLite and it works ok on console. The problem is when I try to use it in Java.
Have the same problem when try to use JavaDB).

Quote:

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java.lang.ClassNotFoundException: org.sqlite.JDBC

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The java program can not find the class listed in the error message. You need to put the jar file containing that class's class file on the classpath.
java -cp <JARFILE>.jar;. <CLASSNAME>

To add to Norms post, do not rely on CLASSPATH.
You should always define your classpath at execution, using the -cp switch.
One reason is that CLASSPATH is the last place Java goes to find out what classpath it should use. -cp takes precedence, and the manifest in an executable jar takes precedence over that.
Another reason is that if you have mutliple projects on one box not all of them will want to use the same versions of jar files.

Also, next time you have a question start your own thread -- they're free. This one's tow years old.

I'm splitting the current discussion to a new thread.

db

Split from http://www.java-forums.org/jdbc/3120...bc-driver.html

db