classpath

I am not clear about this. When I run a java App or run an Applet in applet viewer, (in the IDE environment), System.getProperty("java.class.path") gives me the same as System.getenv("CLASSPATH") which is the CLASSPATH defined in my env variable. But when I deploy my applet to webserver and access it from the same computer as a client, I get different results for the two. ( System.getProperty("java.class.path") only points to JRE home and System.getenv("CLASSPATH") returns null). And here is some other things that make me wonder: For the applet part, the env var JAVA_HOME, I get the same

This question already has an answer here: Including all the jars in a directory within the Java classpath 24 answers From the command line, how do I set the Java CLASSPATH option to point to one or more directories containing multiple jar file? Are there wildcards for recursive directory and sub-directory support? (My JAR files are sorted in several sub-directories.) msi If you are using Java 6 or higher you can use wildcards of this form: java -classpath ".;c:\mylibs\*;c:\extlibs\*" MyApp If you would like to add all subdirectories: lib\a\, lib\b\, lib\c\, there is no mechanism for this in

I have a Tomcat application which needs to reference some properties files that are external to the app. Generally these are stored on a local machine at a specific place like C:\PROJECT_NAME\conf\ . In Tomcat 7 this was achievable by placing a context.xml file inside of /META-INF/ which used a VirtualWebappLoader to essentially add this location to the application classpath as follows: <Context> <Loader className="org.apache.catalina.loader.VirtualWebappLoader" virtualClasspath="/PROJECT_NAME/conf" searchVirtualFirst="true" /> </Context> How do I achieve this same thing in Tomcat 8? There is

Command: javah -jni JavaHowTo Result: error: cannot access JavaHowTo class file for JavaHowTo not found javadoc: error - Class JavaHowTo not found. Error: No classes were specified on the command line. Try -help. I have set the class path correctly, but still i am getting this javah error. Any solution for this will be much helpful. Glen Try javah -jni com.example.JavaHowTo where com.example is your package. You also need to run javah from the directory containing com/example/JavaHowTo.class e.g. if your structure is /home/user/com/example/JavaHowTo.class run javah from /home/user The

In order to better understand how things works in Java, I'd like to know if I can dynamically add, at runtime, a directory to the class path. For example, if I launch a .jar using "java -jar mycp.jar" and output the java.class.path property, I may get: java.class.path: '.:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java' Now can I modify this class path at runtime to add another directory? (for example before making the first call to a class using a .jar located in that directory I want to add). You can use the following method: URLClassLoader.addURL(URL url) But you'll

If I have multiple files of the same name on classpath (e.g. I have multiple .jar with log4j.properties ), what are the rules JVM follows to chose one? It is specified by the order in which the resources (i.e. usually jar files) are specified using -classpath option. Resources 'earlier' on the classpath take precedence over resources that are specified after them. This can be also set in the manifest file of your application and then you don't need to provide -classpath option. You may want to check these articles on how to work with manifest files. The exhaustive description of "how classes

I have checked out a project using Subversive for Eclipse and I am getting the following errors: The project cannot be built until build path errors are resolved Unbound classpath container: 'JRE System Library[jdk1.5.0_08]' I'm assuming the first error will be resolved as soon as the second one is. I think I need to install JDK 1.5.0_08 and set it as a jre system library for the project but I can't find anywhere to download it - the closest I can get is JDK 1.5.0_22. If anyone could provide an alternative solution (or a download link for jdk1.5.0_08 I suppose) I would appreciate it. andi5