How is Kotlin Code Executed ?

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How is Kotlin Code Executed ?

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Hey Developers,

Hope you are all doing well. Well, this is the first tech blog that I am writing so apologize in the beginning only if I am not able to explain my thoughts in words properly.

So in this blog, we are going to understand how is kotlin code executed in JVM.

Kotlin is a statically-typed programming language that runs on the Java Virtual Machine (JVM). Understanding how Kotlin code is executed is important for developers to write efficient and effective code.

  • Compilation: The first step in the execution of Kotlin code is its compilation. The Kotlin compiler converts the source code written in Kotlin into Java bytecode. Java bytecode is a low-level code that is executed by the JVM. This bytecode is stored in .class files.

  • Class Loading: The next step is class loading. The JVM loads the compiled .class files into memory and converts them into Java classes. The JVM also performs verification on the loaded classes to ensure that they do not violate any Java security restrictions.

  • Preparation: Once the classes are loaded, the JVM prepares the data required for execution. This includes allocating memory for class variables and initializing them with default values.

  • Execution: The JVM executes the code in the main method, which is the entry point for the program. The JVM starts the execution by creating an instance of the class containing the main method. The JVM then executes the code in the main method. The JVM also executes the code in other methods as they are called by the main method.

  • Garbage Collection: The JVM continuously monitors the memory usage of the program. When the program is no longer using an object, the JVM marks it for garbage collection. The JVM then frees up the memory occupied by the object, allowing it to be reused.

In conclusion, the execution of Kotlin code on the JVM is a process that involves compilation, class loading, preparation, execution, and garbage collection. The JVM is responsible for executing the Java bytecode generated by the Kotlin compiler, ensuring that the code is efficient and runs smoothly. Understanding the process of how Kotlin code is executed is crucial for developers to write effective and efficient code.