Why jar files

The file ending. These archives usually contain multiple Java files and metadata that can be sent compiled and compressed. In addition to. Therefore, it works like a. These libraries are typically used to simplify the programming of Java applications and applets. An important part of such Java libraries is the manifest : This file contains details about the version and the author of the code. If the archive concerns an executable file, additional information will be available.

Oracle launched the platform-independent and object-oriented programming language Java back in the s. The language is considered to be an imperative programming languages because of its clear command structure. To gain access to the individual files in a Java archive, you need to unpack the library. This can be done in a similar way to. The following compression programs support the. Open the installed compression program. There is a problem at integration if you have several elements in your platform that use certain libraries that cannot be included in more than one classloader.

Typically, this occurs when a process contains data of type Java or multiple connectors notably with the Webservice, Alfresco, and CMIS connectors. For example, the Stax libraries, which are used in the Webservice and Alfresco connectors and for Java data cannot be loaded in more than one classloader. A ClassCastException for com. Like Article. Next Converting Text to Speech in Java. Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment?

Please use ide. Load Comments. First we need to define similar concept to JAR in. So, an assembly is the fundamental unit of code packaging in the. NET environment. Assemblies are self contained and typically contain the intermediate code from compiling classes, metadata about the classes, and any other files needed by the packaged code to perform its task. Since assemblies are the fundamental unit of code packaging, several actions related to interacting with types must be done at the assembly level.

For instance , granting of security permissions, code deployment, and versioning are done at the assembly level. Java JAR files perform a similar task in Java with most differences being in the implementation.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. What exactly does a jar file contain? Ask Question. Asked 9 years, 2 months ago. Active 2 years, 11 months ago. Viewed k times. Thanks for all the answers! Improve this question. Randika Vishman 7, 3 3 gold badges 57 57 silver badges 76 76 bronze badges. JAR File Format — mellamokb. Blue Moon: The funny thing is google leads me here.

And this us not really a programming question that needs to be encouraged on SO. I didn't downvote or close vote though. Add a comment.