03-14-2005
Connection problem with gui java program to postgreaql database using unix
Having problem in connecting my gui java program to postgreaql database. I first used setenv classpath /home/share/postgresql/java/postgresql.jar
![Stick Out Tongue Smilie](https://www.unix.com/images/smilies/tongue.gif)
roj1, where proj1 is my folder conatining all java and class file, to set classpath. Then javac *.java. Then java proj1.Login. It gives me "java.lang.ClassNotFoundException: org.postgresql.Driver
", "java.lang.NullPointerException" and "Exception in thread 'main' java.lang.NoClassDefFoundError: Login"
so what is wrong with my command and what are the right commands?
PS: my db uses postgresql 7.4, my program involves jdk 1.4, I use x-window 6.0 to open the program, I am using ssh 3.2.9 to connect to unix server, and the os is solaris 8
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LEARN ABOUT DEBIAN
libglpk-java
libglpk-java(3) libglpk-java overview libglpk-java(3)
NAME
libglpk-java - GNU Linear Programming Kit Java Binding
DESCRIPTION
The GNU Linear Programming Kit (GLPK) package supplies a solver for large scale linear programming (LP) and mixed integer programming
(MIP). The GLPK project is hosted at http://www.gnu.org/software/glpk.
It has two mailing lists:
- help-glpk@gnu.org and
- bug-glpk@gnu.org.
To subscribe to one of these lists, please, send an empty mail with a Subject: header line of just "subscribe" to the list.
GLPK provides a library written in C and a standalone solver. The source code provided at ftp://gnu.ftp.org/gnu/glpk/ contains the docu-
mentation of the library in file doc/glpk.pdf.
The Java platform provides the Java Native Interface (JNI) to integrate non-Java language libraries into Java applications.
Project GLPK for Java delivers a Java Binding for GLPK. It is hosted at http://glpk-java.sourceforge.net/.
To report problems and suggestions concerning GLPK for Java, please, send an email to the author at xypron.glpk@gmx.de.
ARCHITECTURE
A GLPK for Java application will consist of the following
- the GLPK library
- the GLPK for Java JNI library
- the GLPK for Java class library
- the application code.
GLPK LIBRARY
The GLPK library can be compiled from source code. Follow the instructions in file INSTALL provided in the source distribution. Precompiled
packages are available in many Linux distributions.
The usual installation path for the library is /usr/local/lib/libglpk.so. The library has to be in the search path for binaries.
GLPK FOR JAVA JNI LIBRARY
The GLPK for Java JNI library can be compiled from source code. Follow the instructions in file INSTALL provided in the source distribu-
tion.
The usual installation path for the library is /usr/local/lib/jni/libglpk-java.so. The library has to be in the search path for binaries.
Specify the library path upon invocation of the application, e.g.
java -Djava.library.path=/usr/local/libjni
GLPK FOR JAVA CLASS LIBRARY
The source code to compile the GLPK for Java class library is provided at http://glpk-java.sourceforge.net.
The GLPK for Java class library can be compiled from source code. Follow the instructions in file INSTALL provided in the source distribu-
tion. The usual installation path for the library is /usr/local/share/java/glpk-java.jar.
The library has to be in the CLASSPATH. Specify the classpath upon invocation of the application, e.g.
java -classpath /usr/local/share/java/glpk-java.jar;.
SEE ALSO
Further documentation and examples can be found in the documentation path, which defaults to /usr/local/share/doc/libglpk-java.
version 1.0.18 September 10th, 2011 libglpk-java(3)