Add Javamail Library To Classpath Mac
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Set Up The Classpath. Add A Class-Path Entry To The Manifest; Make The Jar Executable; Altering The Classpath: Defining a Classpath Directory Prefix. Add A Class-Path Entry To The Manifest. Maven Archiver can add the classpath of your project to the manifest. This is done with the configuration element. I create an instance of TableManager in Main class. Without the external library and compiling with just javac Main.java works fine. How can I fix this. I need the external library for the StringUtils. I'm not using frameworks. Just text editor and running to terminal. The class search path (class path) can be set using either the -classpath option when calling a JDK tool (the preferred method) or by setting the CLASSPATH environment variable. The -classpath option is preferred because you can set it individually for each application without affecting other applications and without other applications modifying its value.
Jun 24, 2009 Re: add library to a classpath masijade Jun 24, 2009 6:00 AM ( in response to 800626 ) when you use -jar the -cp option and the system classpath are ignored and only the classpath defined in the manifest file is used. (MAC OS X) Java JAR Archives and classpath. The JVM class loader can only find and use JAR archives that are listed in the classpath. There are several ways to add a JAR to the classpath: Copy the JAR to one of the directories listed in the CLASSPATH environment variable. Jun 26, 2008 By the way class path dose not seem to work with XP or Vista. For example if you add the path of javac to the classpath then try to run javac it dose not work. But, it works if you add it to the path. But, the point is I have added the mail.jar to path and classpath as you said to do, but I still get package javax.mail does not exist.
The class path is the path that the Java runtime environment searches for classes and other resource files. The class search path (more commonly known by the shorter name, 'class path') can be set using either the -classpath option when calling a JDK tool (the preferred method) or by setting the CLASSPATHPython pygame tutorial. environment variable. The -classpath option is preferred because you can set it individually for each application without affecting other applications and without other applications modifying its value.
%sdkTool-classpathclasspath1:classpath2..
-or-
% setenv CLASSPATHclasspath1:classpath2..
where:
java, javac, javadoc, or apt. For a listing, see JDK Tools.:classpath2- For a .jar or .zip file that contains .class files, the class path ends with the name of the .zip or .jar file.
- For .class files in an unnamed package, the class path ends with the directory that contains the .class files.
- For .class files in a named package, the class path ends with the directory that contains the 'root' package (the first package in the full package name).
Multiple path entries are separated by colons.
The default class path is the current directory. Setting the CLASSPATH variable or using the -classpath command-line option overrides that default, so if you want to include the current directory in the search path, you must include '.' in the new settings.
Classpath entries that are neither directories nor archives (.zip or .jar files) nor * are ignored.
Description
The class path tells the JDK tools and applications where to find third-party and user-defined classes -- that is, classes that are not extensions or part of the Java platform. The class path needs to find any classes you've compiled with the javac compiler -- its default is the current directory to conveniently enable those classes to be found.
The JDK, the JVM and other JDK tools find classes by searching the Java platform (bootstrap) classes, any extension classes, and the class path, in that order. (For details on the search strategy, see How Classes Are Found.) Class libraries for most applications will want to take advantage of the extensions mechanism. You only need to set the class path when you want to load a class that's (a) not in the current directory or in any of its subdirectories, and (b) not in a location specified by the extensions mechanism.
If you are upgrading from an older version of the JDK, your startup settings may include CLASSPATH settings that are no longer needed. You should remove any settings that are not application-specific, such as classes.zip. Some third-party applications that use the Java Virtual Machine may modify your CLASSPATH environment variable to include the libaries they use. Such settings can remain.
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You can change the class path by using the JDK tools' -classpath option when you invoke the JVM or other JDK tools or by using the CLASSPATH environment variable. Using the -classpath option is preferred over setting CLASSPATH environment variable because you can set it individually for each application without affecting other applications and without other applications modifying its value.
Classes can be stored either in directories (folders) or in archive files. The Java platform classes are stored in rt.jar. For more details on archives and information on how the class path works, see Understanding the class path and package names near the end of this document.
Important Note: Some older versions of the JDK software included a <jdk-dir>/classes entry in the default class path. That directory exists for use by the JDK software, and should not be used for application classes. Application classes should be placed in a directory outside of the JDK direcotry hierarchy. That way, installing a new JDK does not force you to reinstall application classes. For compatibility with older versions, applications that use the <jdk-dir>/classes directory as a class library will run in the current version, but there is no guarantee that they will run in future versions.
Using the JDK tools' -classpath option
The Java tools java, jdb, javac, and javah have a -classpath option which replaces the path or paths specified by the CLASSPATH environment variable while the tool runs. This is the recommended option for changing class path settings, because each application can have the class path it needs without interfering with any other application.
The runtime tool java has a -cp option, as well. This option is an abbreviation for -classpath.
For very special cases, both java and javac have options that let you change the path they use to find their own class libraries. The vast majority of users will never to need to use those options, however.
Using the CLASSPATH environment variable
Setting CLASSPATH
Clearing CLASSPATH
Changing Startup Settings
| Shell | Startup Script |
|---|---|
| csh, tcsh | Examine your .cshrc file for the setenv command. |
| sh, ksh | Examine your .profile file for the export command. |
Understanding class path wildcards
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Understanding the class path and package names
Folders and archive files
Multiple specifications
Specification order
Class paths to the JAR, zip or class files. Each class path should end with a file name or directory depending on what you are setting the class path to, as follows:
For a JAR or zip file that contains class files, the class path ends with the name of the zip or JAR file.
For class files in an unnamed package, the class path ends with the directory that contains the class files.
For class files in a named package, the class path ends with the directory that contains the root package, which is the first package in the full package name.
Multiple path entries are separated by semicolons with no spaces around the equals sign (=) in Windows and colons in Oracle Solaris.
The default class path is the current directory. Setting the CLASSPATH variable or using the -classpath command-line option overrides that default, so if you want to include the current directory in the search path, then you must include a dot (.) in the new settings.
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Class path entries that are neither directories nor archives (.zip or JAR files) nor the asterisk (*) wildcard character are ignored.