Обсуждение: java.lang.NoClassDefFoundError
Hi,
Could you help me in my program JAVA with jdbc Postgre
I have my simple code
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.SQLException;
public class Example2 {
public static void main(String[] argv) {
System.out.println("Checking if Driver is registered with DriverManager.");
try {
Class.forName("org.postgresql.Driver");
} catch (ClassNotFoundException cnfe) {
System.out.println("Couldn't find the driver!");
System.out.println("Let's print a stack trace, and exit.");
cnfe.printStackTrace();
System.exit(1);
}
}
}
Then I execute :
javac Example2.java
Then I execute
java Example2
but I get
Exception in thread "main" java.lang.NoClassDefFoundError: Example
Wich is my error ?
I copied pg73jdbc3.jar in my path
C:\j2sdk1.4.1_07\lib\
Its have org.postgresql.Driver
Thanks advanted
ana
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But now
I get
C:\j2sdk1.4.1_07\bin>java -classpath c:\j2sdk1.4.1_07\lib\pg73jdbc.jar;. Example
2
Checking if Driver is registered with DriverManager.
Couldn't find the driver!
Let's print a stack trace, and exit.
java.lang.ClassNotFoundException: org.postgresql.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:198)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:272)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:140)
at Example2.main(Example2.java:10)
:(
-----Mensaje original-----
De: William Lai [mailto:wlai2768@gmail.com]
Enviado el: Martes, 18 de Enero de 2005 12:25
Para: Becerra Lagos Ana Lilian
CC: pgsql-jdbc@postgresql.org
Asunto: Re: [JDBC] java.lang.NoClassDefFoundError
Hi,
Did you try,
java -classpath c:\path\to\pg73jdbc3.jar;. Example2
Have a nice day,
William
Becerra Lagos Ana Lilian wrote:
> Hi,
>
>
>
> Could you help me in my program JAVA with jdbc Postgre
>
> I have my simple code
>
>
>
> import java.sql.DriverManager;
>
> import java.sql.Connection;
>
> import java.sql.SQLException;
>
>
>
> public class Example2 {
>
> public static void main(String[] argv) {
>
> System.out.println("Checking if Driver is registered with
> DriverManager.");
>
>
>
> try {
>
> Class.forName("org.postgresql.Driver");
>
> } catch (ClassNotFoundException cnfe) {
>
> System.out.println("Couldn't find the driver!");
>
> System.out.println("Let's print a stack trace, and exit.");
>
> cnfe.printStackTrace();
>
> System.exit(1);
>
> }
>
> }
>
> }
>
>
>
> Then I execute :
>
> javac Example2.java
>
>
>
> Then I execute
>
> java Example2
>
>
>
> but I get
>
> Exception in thread "main" java.lang.NoClassDefFoundError: Example
>
>
>
> Wich is my error ?
>
> I copied pg73jdbc3.jar in my path
>
> C:\j2sdk1.4.1_07\lib\
>
> Its have org.postgresql.Driver
>
>
>
> Thanks advanted
>
> ana
>
> Este correo es dirigido solo a las personas que aparecen como
> destinatarios
> y puede contener información confidencial o privilegiada.
> Si usted recibió este correo por error, por favor notificar
> inmediatamente
> al emisor y elimine el correo original. Cualquier otro uso de este correo
> esta prohibido.
>
> ******************************************************************************************************
>
>
> This message is for the designated recipient only and may contain
> privileged or
> confidential information. If you have received it in error, please
> notify the sender
> immediately and delete the original. Any other use of the email is
> prohibited.
Este correo es dirigido solo a las personas que aparecen como destinatarios
y puede contener información confidencial o privilegiada.
Si usted recibió este correo por error, por favor notificar inmediatamente
al emisor y elimine el correo original. Cualquier otro uso de este correo
esta prohibido.
******************************************************************************************************
This message is for the designated recipient only and may contain privileged or
confidential information. If you have received it in error, please notify the sender
immediately and delete the original. Any other use of the email is prohibited.
Please double-check the your jar filename, is pg73jdbc.jar or pg73jdbc3.jar?
Becerra Lagos Ana Lilian wrote:
>But now
>I get
>
>C:\j2sdk1.4.1_07\bin>java -classpath c:\j2sdk1.4.1_07\lib\pg73jdbc.jar;. Example
>2
>Checking if Driver is registered with DriverManager.
>Couldn't find the driver!
>Let's print a stack trace, and exit.
>java.lang.ClassNotFoundException: org.postgresql.Driver
> at java.net.URLClassLoader$1.run(URLClassLoader.java:198)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:272)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:140)
> at Example2.main(Example2.java:10)
>
>:(
>
>
>
>-----Mensaje original-----
>De: William Lai [mailto:wlai2768@gmail.com]
>Enviado el: Martes, 18 de Enero de 2005 12:25
>Para: Becerra Lagos Ana Lilian
>CC: pgsql-jdbc@postgresql.org
>Asunto: Re: [JDBC] java.lang.NoClassDefFoundError
>
>Hi,
>
>Did you try,
>
>java -classpath c:\path\to\pg73jdbc3.jar;. Example2
>
>Have a nice day,
>William
>
>Becerra Lagos Ana Lilian wrote:
>
>
>
>>Hi,
>>
>>
>>
>>Could you help me in my program JAVA with jdbc Postgre
>>
>>I have my simple code
>>
>>
>>
>>import java.sql.DriverManager;
>>
>>import java.sql.Connection;
>>
>>import java.sql.SQLException;
>>
>>
>>
>>public class Example2 {
>>
>> public static void main(String[] argv) {
>>
>> System.out.println("Checking if Driver is registered with
>>DriverManager.");
>>
>>
>>
>> try {
>>
>> Class.forName("org.postgresql.Driver");
>>
>> } catch (ClassNotFoundException cnfe) {
>>
>> System.out.println("Couldn't find the driver!");
>>
>> System.out.println("Let's print a stack trace, and exit.");
>>
>> cnfe.printStackTrace();
>>
>> System.exit(1);
>>
>> }
>>
>> }
>>
>> }
>>
>>
>>
>>Then I execute :
>>
>>javac Example2.java
>>
>>
>>
>>Then I execute
>>
>> java Example2
>>
>>
>>
>>but I get
>>
>>Exception in thread "main" java.lang.NoClassDefFoundError: Example
>>
>>
>>
>>Wich is my error ?
>>
>>I copied pg73jdbc3.jar in my path
>>
>>C:\j2sdk1.4.1_07\lib\
>>
>>Its have org.postgresql.Driver
>>
>>
>>
>>Thanks advanted
>>
>>ana
>>
>>Este correo es dirigido solo a las personas que aparecen como
>>destinatarios
>>y puede contener informaci�n confidencial o privilegiada.
>>Si usted recibi� este correo por error, por favor notificar
>>inmediatamente
>>al emisor y elimine el correo original. Cualquier otro uso de este correo
>>esta prohibido.
>>
>>******************************************************************************************************
>>
>>
>>This message is for the designated recipient only and may contain
>>privileged or
>>confidential information. If you have received it in error, please
>>notify the sender
>>immediately and delete the original. Any other use of the email is
>>prohibited.
>>
>>
>Este correo es dirigido solo a las personas que aparecen como destinatarios
>y puede contener informaci�n confidencial o privilegiada.
>Si usted recibi� este correo por error, por favor notificar inmediatamente
>al emisor y elimine el correo original. Cualquier otro uso de este correo
>esta prohibido.
>
>******************************************************************************************************
>
>This message is for the designated recipient only and may contain privileged or
>confidential information. If you have received it in error, please notify the sender
>immediately and delete the original. Any other use of the email is prohibited.
>
>
>
Hi,
Did you try,
java -classpath c:\path\to\pg73jdbc3.jar;. Example2
Have a nice day,
William
Becerra Lagos Ana Lilian wrote:
> Hi,
>
>
>
> Could you help me in my program JAVA with jdbc Postgre
>
> I have my simple code
>
>
>
> import java.sql.DriverManager;
>
> import java.sql.Connection;
>
> import java.sql.SQLException;
>
>
>
> public class Example2 {
>
> public static void main(String[] argv) {
>
> System.out.println("Checking if Driver is registered with
> DriverManager.");
>
>
>
> try {
>
> Class.forName("org.postgresql.Driver");
>
> } catch (ClassNotFoundException cnfe) {
>
> System.out.println("Couldn't find the driver!");
>
> System.out.println("Let's print a stack trace, and exit.");
>
> cnfe.printStackTrace();
>
> System.exit(1);
>
> }
>
> }
>
> }
>
>
>
> Then I execute :
>
> javac Example2.java
>
>
>
> Then I execute
>
> java Example2
>
>
>
> but I get
>
> Exception in thread "main" java.lang.NoClassDefFoundError: Example
>
>
>
> Wich is my error ?
>
> I copied pg73jdbc3.jar in my path
>
> C:\j2sdk1.4.1_07\lib\
>
> Its have org.postgresql.Driver
>
>
>
> Thanks advanted
>
> ana
>
> Este correo es dirigido solo a las personas que aparecen como
> destinatarios
> y puede contener información confidencial o privilegiada.
> Si usted recibió este correo por error, por favor notificar
> inmediatamente
> al emisor y elimine el correo original. Cualquier otro uso de este correo
> esta prohibido.
>
> ******************************************************************************************************
>
>
> This message is for the designated recipient only and may contain
> privileged or
> confidential information. If you have received it in error, please
> notify the sender
> immediately and delete the original. Any other use of the email is
> prohibited.
It didn't work for me either. When I put the jar file in my classes directory, it did work.
""Becerra Lagos Ana Lilian"" <exabecerra@nt.entel.cl> schreef in bericht news:3A568BC085A5794983C7118F1A27CDEC2C7C40@epmarexc03.Entelpcs.Entelcorp.com...Hi,
Could you help me in my program JAVA with jdbc Postgre
I have my simple code
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.SQLException;
public class Example2 {
public static void main(String[] argv) {
System.out.println("Checking if Driver is registered with DriverManager.");
try {
Class.forName("org.postgresql.Driver");
} catch (ClassNotFoundException cnfe) {
System.out.println("Couldn't find the driver!");
System.out.println("Let's print a stack trace, and exit.");
cnfe.printStackTrace();
System.exit(1);
}
}
}
Then I execute :
javac Example2.java
Then I execute
java Example2
but I get
Exception in thread "main" java.lang.NoClassDefFoundError: Example
Wich is my error ?
I copied pg73jdbc3.jar in my path
C:\j2sdk1.4.1_07\lib\
Its have org.postgresql.Driver
Thanks advanted
ana
Este correo es dirigido solo a las personas que aparecen como destinatarios
y puede contener información confidencial o privilegiada.
Si usted recibió este correo por error, por favor notificar inmediatamente
al emisor y elimine el correo original. Cualquier otro uso de este correo
esta prohibido.
******************************************************************************************************
This message is for the designated recipient only and may contain privileged or
confidential information. If you have received it in error, please notify the sender
immediately and delete the original. Any other use of the email is prohibited.