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JDK, JRE aur JVM
Last Updated : 26 May, 2026
title: JDK, JRE aur JVM
Fundamentals124 words4 headingsExamples included
title: JDK, JRE aur JVM description: Java ke teen important components ka detailed explanation
JVM — Java Virtual Machine
Java bytecode execute karne wali virtual machine.
Kaam:
- Bytecode load karna
- Bytecode verify karna
- Bytecode execute karna
- Memory manage karna (Garbage Collection)
JVM ke parts:
- Class Loader
- JIT Compiler
- Garbage Collector
- Runtime Data Areas (Heap, Stack, Method Area)
JRE — Java Runtime Environment
JVM + Standard Libraries. Sirf Java programs chalane ke liye.
JRE = JVM + Java Class Libraries
JDK — Java Development Kit
Java programs likhne aur chalane ke liye complete package.
JDK = JRE + Development Tools
Development Tools include:
javac— Java Compilerjava— JVM launcherjavadoc— Documentation generatorjar— Archive tooljdb— Debugger
Summary
JDK
├── JRE
│ ├── JVM
│ └── Class Libraries
└── Development Tools
├── javac
├── java
└── javadoc
Developer → JDK install karo End User → JRE enough hai
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