Home » What is bytecode in Java? | The Ultimate Guide [2022]

What is bytecode in Java? | The Ultimate Guide [2022]

what is bytecode in java

Before going in-depth on our main topic What is bytecode in Java, it is important for us to have a brief introduction of it first. Java is a programming language that first appeared in 1995 and it is now about 26 years old. Java has been the pioneer language in development because of its speed and efficiency since its arrival.

Even today, it is being used for a lot of purposes in which no other language is even a close match to Java. Java is a high-level object-oriented programming language that is used in different types of developments.

Also, I’ll explain everything that is necessary for the readers to understand this article completely. I want you to follow along till the end of this article carefully.

1. Understanding bytecode in Java?

1.1 What is bytecode in Java?

When a Java program is written, it is in the form of a .java file and when it is compiled, another code is generated, called bytecode and in the form of a .class file. This bytecode is actually an instruction set for JVM(Java Virtual Machine) which is, in turn, an interpreter that translates that bytecode to the machine code so that it can execute it accordingly.

1.2 Importance of bytecode in Java Programming language

Bytecode enables java programs to run on any device with the help of an interpreter that is known as JVM. It interprets this bytecode to the machine code but it isn’t runnable directly on any device without an interpreter. You can only run it once you have installed an interpreter for it. So bytecode in Java fulfills a very important purpose in order to make the java program run well.

2. How is bytecode code different from machine code?

Machine code is actually the set of instructions or the binary code that could be directly understood and executed by the CPU and it doesn’t need an interpreter to interpret the instructions in the form of machine code to the machine so that it can execute it.

On the other hand, bytecode is the set of instructions generated after the Java program is compiled from a .java file and this bytecode can’t run directly on the machine but it relies on an interpreter known as JVM which interprets these instructions to the machine in the form of machine code which then executes this code.

3. Which unique functionality does it adds to the Java programming language?

The unique functionality that bytecode adds to Java is platform independence because it enables the java program to run on any platform. You have to install the respective JVM for that platform and the same bytecode will be interpreted for that respective platform.

So, you have to take the bytecode to any platform and it will be interpreted accordingly with the help of JVM. This feature enables Java programs to run on any platform and not on a single platform only.

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4. Conclusion

Bytecode in Java is an element of significant importance and its use and purpose should be understood by every Java developer. It adds the unique functionality of platform independence to the Java programming language which enables the Java program to run on any platform.

I’ve discussed all the relative concepts in this article in order to provide you with the proper understanding of bytecode in the Java programming language.

Also, let me know in the comment section what do you think about all the stuff that I’ve discussed in this article?

Summary
What is bytecode in Java? | The Ultimate Guide [2022]
Article Name
What is bytecode in Java? | The Ultimate Guide [2022]
Description
Unlock: What is bytecode in Java? Its importance? Difference between bytecode and machine code? Which Unique functionality it adds to Java?
Author
Publisher Name
Malik Kamal Akbar

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