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IT Terminology Dictionary: Letter J
| Abbreviation | Decoding | Description | Group | Note | Related terms |
|---|---|---|---|---|---|
| JDK | Java Development Kit | A set of tools for developing in Java. | Development | Compiler, debugger, libraries, and other questionable joys. | |
| JIT | Just-In-Time Compilation | Compiles bytecode to machine code on the fly. | Development | So the program starts fast, but initially lags a bit. | |
| JPA | Java Persistence API | A standard for working with databases in Java. | Development | So you can save objects to tables instead of writing SQL manually. | |
| JS | JavaScript | A programming language that makes web pages interactive. Without it, the site just displays information, but with it — it responds to user actions. | Web Development | Without JS, buttons on the site are just pictures you can look at but uselessly click. With JS they start living their own life: opening, closing, hiding, jumping out... like your socks in the washing machine. Sometimes JS works, sometimes it doesn't, but without it the internet would be boring like Monday morning. | |
| JSF | JavaServer Faces | A framework for building web interfaces in Java. | Development | Slow, but suitable for its tasks. | |
| JSON | JavaScript Object Notation | A data exchange format readable by both humans and machines. | Data | It's like a backpack where you've neatly arranged things on shelves: each shelf has a label (key), and underneath it is the thing itself (value). If someone asks for your "phone," you don't dump out the entire backpack, you just take it out by the label. Convenient, right? | |
| JSON-LD | JSON for Linking Data | A JSON-based format for describing data with support for relationships. | Data | To make data linked and understandable for machines. | JSON |
| JSP | JavaServer Pages | A technology for creating dynamic web pages in Java. | Development | Obsolete, but still alive in old projects. | |
| JVM | Java Virtual Machine | A virtual machine that runs Java programs. | Development | Great when it works. `When` — that's the key word. | |
| JWT | JSON Web Token | A token for authentication and data transfer between services. | Security | Like an event pass: show it and you're in. |
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