What is JIT in java

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What is JIT in java

Accepted Answer

JIT stands for Just-In-Time compilation in Java. It dynamically compiles bytecode into machine code at runtime for improved performance.

JIT is a part of the Java Virtual Machine (JVM) that optimizes the execution of Java programs.
It analyzes the frequently executed parts of the bytecode and compiles them into native machine code.
This compilation happens at runtime, just before the code is executed, hence the name Just-In-Time.
JIT compilation improves the performance of Java programs by eliminating the need for interpretation of bytecode.
It also allows for adaptive optimization, where the JVM can recompile and optimize code based on runtime conditions.
For example, if a loop is executed multiple times, JIT can optimize it by unrolling or eliminating unnecessary instructions.

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