Use Class.forName ("com.mysql.jdbc.Driver"); syntax in defining the driver of MySQL in Eclipse as well as in Netbeans. In Netbeans it's perfectly working while on Eclipse it's not working. Already stored the jar file in WEB-INF/lib and already added in Eclipse library.
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I am using OpenJDK 11 and OpenJFX 11 on Windows 7. My IDE is Netbeans 9. I have replicated the tutorial (published by NetbeansVideos) below :
JDK 11, OpenJFX, Apache Ant, and Apache NetBeans 10
It is a simple Hello World type code. It works in Netbeans. But when I click the JAR file it doesn't work.
My JAVA_HOME in environment variable is set.
How do I make that Module JAR execute by clicking?
Thanks.
An archive becomes a modular JAR when you include a module descriptor,
module-info.class, in the root of the given directories or in the root
of the .jar archive.
-- https://docs.oracle.com/en/java/javase/17/docs/specs/man/jar.html
If you get your OpenJDK binaries from Adoptium, their installer has an option to associate .jar files. (Not sure about other distros) When you have the file association setup double clicking on a modular, executable, jar file behaves as expected. (Confirmed this is working as of JDK 17 and Windows 10). If not, you can manually setup the Windows file association yourself as described in: Running JAR file on Windows
While trying to open NetBeans 6.0 RC2 under JDK 1.6, the IDE not only it doesn't open but it throws this exception in the command line... I downloaded a JAR file that in theory has that LookupListener class but I don't know where to place it or if placing it somewhere will solve the problem.
Do you know why is that exception arising ?.
I am a newbie and I wanted to know how build path and all mysql.jar to Eclipse so that I can use it for JSP and I have already made a dynamic web project configured with Tomcat. Only the database connection is not happening.
The error is:
java.sql.SQLException : No suitable driver found for jdbc:mysql://localhost/pj_company
You could create a lib folder your WEB-INF folder and paste the mysql driver jar in it, and then in eclipse, right click on the jar file --> Build Path --> Add to Build Path
I have a webapp I'll call "App1" I am using to create some webplots. I have the .jar files in webapps/App1/lib/ and when I visit the server, I find that I am able to launch some webapps, but others I get funny exceptions. One, being
java.lang.NoClassDefFoundError: Could not initialize class com.jrefinery.chart.JFreeChartConstants
Then, when I add the jfreechart jar to the classpath, I get a different error:
java.lang.NoClassDefFoundError: com/jrefinery/util/ObjectUtils
tomcat version: 7.0.19
OS: ubuntu 12.04
I've tried it on a windows installation and it seems to work just fine. So I'm guessing it's a classpath error? I've tried adding the jfreechart-*.jar to the catalina classpath but it doesn't seem to fix anything. I've also tried to copy the webapp/App1/lib/ jar files to the top level/lib folder and this doesn't fix anything either.
Any ideas here?
Thanks.
You are missing the correct jar file in your project.
The jfreechart project has been repackaged. If you include the old jfreechart-0.9.3.jar, it will fix your compiler errors.
jfreechart-0.9.3.jar
download : http://mirrors.ibiblio.org/pub/mirrors/maven2/jfreechart/jfreechart/0.9.3/jfreechart-0.9.3.jar
I am using NetBeans IDE 7.2.1 version with APACHE tomcat 7.0.27.0 version server. I am trying to make a servlet file in my project but its showing the following message or error-
"Web application version is unsupported . Upgrade web.xml to version 2.4 or newer or use previous version of NetBeans."
How can i fix it please reply-
I had this Problem and I solved it in a rather curious way. I removed the web.xml file, Created the servlet and replaced the web.xml file and it worked.
I would recommend you get Better Solution from the http://forums.netbeans.org/