What is the full form of JVM?

The full form of JVM stands for Java Virtual Machine. It is an abstract machine that executes Java bytecode. Bytecode is a machine-independent format that can be interpreted by any virtual machine. This makes Java code platform-independent, meaning that it can run on any operating system that has a java virtual machine installed.

The machine is responsible for loading, verifying, and executing its bytecode. It also manages memory, garbage collection, and other tasks.

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JVM Parts

The machine is divided into five main parts:

• Class loader: The class loader loads Java classes into memory.
• Runtime data area: This area stores all the data that is needed to execute a Java program, such as class variables, method arguments, and return values.
• Instruction set interpreter: This part of the virtual machine interprets Java bytecode and executes it.
• Garbage collector: The garbage collector manages memory by automatically deleting objects that are no longer needed.
• Native interface: This part of the machine allows Java code to call native code, which is code that is written in a language other than Java.

The machine is a critical part of the Java platform. It is responsible for making Java code platform-independent and for providing a runtime environment for Java programs.

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Benefits

Here are some of the benefits of JVM –

• Platform independence: Java code can run on any operating system that has a JVM installed.
• Security: The JVM has a built-in security mechanism that helps to protect against malicious code.
• Performance: The JVM is optimized for performance, so Java programs can run quickly.
• Portability: Java code can be easily ported to other platforms.

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Uses

Here are some of the uses of JVM –

• Developing and running Java applications.
• Creating Java applets.
• Creating Java games.
• Developing and running Java-based web applications.
• Developing and running Java-based mobile applications.

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