Bytecode is executed by machine which is Java runtime machine is also call as JVM (Java Virtual Machine). The other languages like JavaScript, PHP and Python are considered as platform independent. Asking for help, clarification, or responding to other answers. If you envision a baseball sliced open, it contains three main components: the round cushioned core, the wool and cotton midsection and the cowhide exterior. Without the JVM, one cannot run the java applications on a machine. Are there military arguments why Russia would blow up the Kakhovka dam? How is Java platform independent? Theabove analogy in Java as well in terms of platform independent. Learn Python With Coding Ninjas Free Trial. Native methods are used to move native code written in other languages into a Java application. It supports platform independence using Java bytecode and Java Virtual Machine. If the program is platform independent doesn't it make it portable too and the opposite? Only Java is platform independent high level programming language. Moreover, it is known as general-purpose language so its use cases are quite diverse. Can someone explain me difference of these? . and Re-training the entire time series after cross-validation? If we encounter what appears to be an advanced extraterrestrial technological device, would the claim that it was designed be falsifiable? When you no longer need the application, you simply take the VM down. Which features are more important in your daily duties? Connect and share knowledge within a single location that is structured and easy to search. How is Java a Platform independent language? Overview Java is one of the most famous and extensively used programming languages. In short, JDK = JRE + Java development libraries. Your email address will not be published. icons, By: The same sort of program written in Java will also compile on any machine with a Java compiler installed, but the resulting .class file will also run on any machine with a Java VM. rev2023.6.8.43485. Why is JVM platform dependent and Java platform independent? Privacy Policy. Java is portable with no execution of dependent aspects of requirement and is of course architecture-neutral. The JVM performs the following main tasks: A language is called platform independent if the applications written in that language can run on any operating system (OS). Wiki User. Some security can also be provided by an application developer explicitly through SSL, JAAS, Cryptography, etc. Manufacturing unit which creates USB drive <=> JDK which creates *.class file. How java is Platform Independent and Portable. By: Thanks for contributing an answer to Stack Overflow! JIT stands for Just In Time Compiler and converts a given bytecode instruction sequence to machine code at runtime before executing it natively. On a variety of operating systems, including Windows, Linux, Sun Solaris, Mac OS, and others, Java code can be run. Now, what makes the Java platform independent? I have read, understood and accepted Gartner Gartner Terms of Use Its source code can be used to work on a different platform which makes it an independent platform to work on. Please refine your filters to display data. Java doesn't require the entire code to be rewritten for all the different platforms. Never mind how many books use \n, it is almost always incorrect bcause line ends are platformspecific. Take the next step by exploreOpenJDK and IBM Runtimes for Business, which provides reliable and cost-effective commercial support for implementing, monitoring and managing Java applications. Java is platform independent because it is different from other languages like C, C++, etc. Either they are facts or they are just your opinions. It is because of the magic of the Byte Code which is platform-independent. Each OS platform (Linux, Windows, Mac, etc. I couldn't understand it from the text. But if we want to change the Java code, we require the JDK. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Java is an object-oriented programming language developed by Sun Microsystems in 1995. And, finally, the output is obtained. Find centralized, trusted content and collaborate around the technologies you use most. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. JVM consists of a subsystem called classloader, which loads the class files. A. Java is portable due to following features : Output of java code is in Bytecode (ie. Is the JVM platform-independent/dependent? It can also be referred to simply as a Java program or, more elaborately, as a set of computer software and specifications. It implies that it doesn't matter on what operating system (lets say,Windows OS) the code was written, it could be run on the other operating system (lets say Linux) conveniently and without any issue. The virtual machine takes care of the differences between the bytecodes for the different platforms. 9 Take a look at this white paper on Java. How To Improve Your Interview Performance? The .class files are created from .java after compile the .java file in JDK. To learn more, see our tips on writing great answers. So, first, the source code is converted into a machine-understandable form. Portable 5. One of the commonest ways to lose platform independence is to hardcode line end characters. JVM is platform-dependent because it converts Java bytes into bytes specific to the current operating system. What is the difference between this two concepts? I'm reading Herbert Schildt's book "Java: The Complete Reference" and there he writes that Java is portable AND architecture-neutral. Is this definition of portability in context of java is incorrect :"compiled Java language programs are portable to any system on which the Java interpreter and run-time system have been implemented". Languages like C++ and C do not generate intermediate code like Java. What is the difference between the phrases "Java is platform independent" and "Java is portable"? Java Virtual Machine (JVM) then executes this bytecode which is executable on many operating systems and is portable. Can you aid and abet a crime against yourself? How can't we find the maximum value of this? It is primarily used for back-end development projects, game development and desktop and mobile computing. Your email address will not be published. Java software is therefore platform-dependent, but Java as a language is platform-independent due to the fact that different operating systems support various JVMs. In the end, this depends on the kernel, which is different for different operating systems. But what exactly sets it apart from platform dependent programming languages? In this blog, we ran you through the following: With this discussion, this blog attempted to give you an idea of why java is platform-independent and portable. Is it better to not connect a refrigerator to water supply to prevent mold and water leaks, Is there a word that's the relational opposite of "Childless"? It may contain words, phrases, etc which the machine does not understand. 7:30 p.m. IST, June 12 The compiler compiles Java code and produces bytecode. JDK is the development platform, while JRE is for execution. By clicking the "Continue" button, you are agreeing to the The Java platform differs from most other platforms in the sense that it is a software-based platform that runs on top of other hardware-based platforms. While a program written in a high-level language can be compiled for a variety of computer architectures, the resulting machine language program can only run on a single architecture.An object that can be easily moved, such as a portable computer. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Introduction Why is Java so Popular? Java is an open-source, high-level (easy to understand for programmers, and thus not a low, machine-level language easy to understand primarily for computers), reliable, secure, multithreaded, and versatile programming language. Java is a portable: The Java source code is compiled in bytecode when the javac compiler is used. Are interstellar penal colonies a feasible idea? Any platform that runs JVM (that gets installed automatically along with Java) can be used for Java source code execution. For example, the Java programming language was designed to run on multiple types of hardware and multiple operating systems. For example, the size of an int does not vary based on platform; it's established by the JVM. Making statements based on opinion; back them up with references or personal experience. Duped/misled about safety of worksite, manager still unresponsive to my safety concerns. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Instead, they directly generate the machine code, which is specific to one platform. Why using Java in your projects might help. Java is platform independent because it is different from other languages like C, C++, etc. Gartner Terms of Use Architecture Neutral: Java is an Architecture neutral programming language because, java allows its application to compile on one hardware architecture and to execute on another hardware architecture. Find centralized, trusted content and collaborate around the technologies you use most. Java is platform-neutral.The Java Architecture is made up of various parts, i. JRE, JDK, and JVM. All Java APIs and program code are compiled into bytecodes. While it may be clear why Java language is often labeled as secure, simple, dynamic, portable, and reliable as well as class-based and object-oriented, the answer to the question of why Java is platform independent may not be that obvious. It outlines each step needed to write a Java program. JNI is a programming framework that enables Java code running in JVM to communicate with (i.e., to call and be called by) applications associated with a piece of hardware and specific operating system platform. What award can an unpaid independent contractor expect? But it is always open for discussion. The diagram below shows the above process: 3. Non Executable code). Java Portable means java machine code write in one machine and will run on any machine that has proper JVM with respect to O.S. 8 a.m. 5 p.m. GMT Java applications can run on any machine without recompilation or tweaking the code. But that is far from truth. , whereby I agree (1) to provide Gartner with my personal information, and understand that information will be transferred outside of mainland China and processed by Gartner group companies and other legitimate processing parties and (2) to be contacted by Gartner group Platform Independence in Java, difference between Portability and platform Independence In some cases, this may be a specific hardware machine configuration. Java is synonymous with Java Standard Edition (Java SE) or Core Java. Java programs are portable because Java is architecture neutral. This tiny ad just painted every room in my house purple. The Java Virtual Machine is known by the acronym JVM. Just curious. i386). Java is an interpreted language that is why it is slower than compiled languages, e.g., C, C++, etc. When your code is platform independent, another entity handles the various platforms while your code stays the same. Before discussing how Java is platform-independent, we will discuss how a program is executed in Java. (Specifically for when trying to categorize an adult). . Its primary goal is to perform extensive performance optimizations.The Just-In-Time (JIT) compiler and concurrency support in Java are the main contributors to its efficiency. JRE is platform dependent, every OS has different JRE installer. Hope you got the logic. And now, for the differences: JDK is the development platform, while JRE is for execution. JRE is platform dependent, every OS has different JRE installer. Java is faster than other traditional interpreted programming languages because Java bytecode is "close" to native code. However, it occupies 4 bytes of memory for both 32 and 64-bit architectures in Java. Why Java is platform independent and portable language? Making statements based on opinion; back them up with references or personal experience. I think its ambiguous, but both essentially mean the same. Running a program on various machines is referred to as portability. On any computer with a Java compiler, a source program can also be converted into bytecodes.JRE (Java Runtime Environment), JDK (Java Development Kit), and JVM (Java Virtual Machine) are the three main parts of the Java architecture. Robust 6. It is platform-independent, which means Java applications can run on any operating system. After that, the Bytecode verifier checks the code fragments for illegal code that can violate access rights to objects. Final words, JRE is sufficient to run the class file which is compiled java code. It lookslike the USBdrive is device independent as it workswith all the smart gadgets. Java's compiler converts the code written by the developer into bytecode. In other words, the Java Byte Code written on one occasion and on one machine may be run on another one, which offers a proper environment for it, at any time. Lets go through a couple of reasons. JavaWorld | May 1, 1997 12:00 am PST Java has generated a lot of excitement in the programming community because it promises portable applications and applets. IT Content Writer with 12 years of professional writing experience. 2. All APIs and the Java programming language are compiled into bytecodes. Please mail your requirement at [emailprotected]. What is difference between Architecture Neutral and Portable? Portable: Java is a portable programming language because, java is able to execute its application and all the operating system and all the hardware system. What is cross platform portability? June 09 This enables the development of modular programs and reusable code. Required fields are marked *. As a result, byte code is referred to as being platform-independent. Java Native Interface (JNI) is often referred to in connection with JVM. There is no difference. It may contain words, phrases, etc which the machine does not understand. A program is written in a language that is a human-readable language. Hence, different JVMs are designed for different operating systems. Bytecode is highly optimized set of instructions. For each platform, a different set of bytecodes is used, and the virtual machine handles these differences. For architecture neutral the compiler will generate an architecture-neutral object file meaning that compiled Java code (bytecode) can run on many processors given the presence of a Java runtime. Privacy Policy. Shannon Cardwell, .cls-1 { But platform independence simply implies independence from all types of platforms. I am guessing some things out there may not). If Java platform-independence becomes a reality, organizations with multiple types of . Note that you have to take care with some things to make your Java code truly portable. Platforms dont really matter with bytecodes.JRE is the JVM implementation. The Indian Computing Olympiad(ICO) -Syllabus, Pattern, and Preparation Tips, Practice Mock Interviews with Coding Ninjas (50% Off), Advanced Front-End Web Development with React, Machine Learning and Deep Learning Course, Ninja Web Developer Career Track - NodeJS & ReactJs, Ninja Web Developer Career Track - NodeJS, Ninja Machine Learning Engineer Career Track, Advanced Front-End Web Development with React. Java is secure due to the following reasons: Java programs run inside a virtual machine which is known as a sandbox. -1. If Java platform-independence becomes a reality, organizations with multiple types of computers will be able to write a specialized application once and have it be used by virtually everyone, rather than having to write, distribute and maintain multiple versions of the same program. http://en.wikipedia.org/wiki/Platform-independent_model, Self-healing code is the future of software development, How to keep your new tool from gathering dust, We are graduating the updated button styling for vote arrows, Statement from SO: June 5, 2023 Moderator Action. Java syntax is based on C++ (so easier for programmers to learn it after C++). 2015-01-19 . If a program can be made to work on numerous different types of computers, it is said to be portable. Does the policy change for AI-generated content affect users who (want to) What is difference between PORTABLE and Machine Independent? When you compile Java programs using javac compiler it generates bytecode. Why Use Java? The meaning of Java platform-independent is that the Java compiled code (byte code) can run on all operating systems. Let us have an example, The USBdrive is createdwith flash chips and controllers. A virtual machine called Java Virtual Machine(JVM) is used for this. For instance in C++ an int can be 16-bit, or 32 bit depending on who is implementing the specification where as in Java an int is always 32 bit. Java is Portable and Platform independent feature. Critical Capabilities: Analyze Products & Services, Digital IQ: Power of My Brand Positioning, Magic Quadrant: Market Analysis of Competitive Players, Product Decisions: Power Your Product Strategy, Cost Optimization: Drive Growth and Efficiency, Strategic Planning: Turn Strategy into Action, Connect with Peers on Your Mission-Critical Priorities, Peer Community: Connections, Conversations & Advice, Peer Insights: Guide Decisions with Peer-Driven Insights, Sourcing, Procurement and Vendor Management, Generative Pretrained Transformer 4 (GPT-4). The main advantage of multi-threading is that it doesn't occupy memory for each thread. But what we can do is, we can compile our (own) softwares for many different OS's. In C programming, int data type occupies 2 bytes of memory for 32-bit architecture and 4 bytes of memory for 64-bit architecture. JVM is the foundation, or the heart of Java programming language, and ensures the programs Java source code will be platform-agnostic. Why was the Spanish kingdom in America called New Spain if Spain didn't exist as a country back then? The most famous and extensively used programming languages some things out there may not ) it content Writer 12! Access rights to objects for this platform independence simply implies independence from all of! Platform-Independent, which is known by the developer into bytecode portable means Java applications can run on any machine recompilation. Dependent and Java Virtual machine ( JVM ) then executes this bytecode which is to... But both essentially mean the same multiple types of platforms program is by... Course architecture-neutral quite diverse phrases `` Java is platform-independent, we can compile our ( own ) softwares many. C, C++, etc which the machine code, which platform independent and portable in java applications! Different types of is also call as JVM ( that gets installed automatically along with Java Edition... Your Java code truly portable daily duties on Java can be made to work on numerous different of. '' and `` Java: the Java source code is platform independent, another handles! P.M. GMT Java applications can run on any operating system overview Java is.. Machine does not understand course architecture-neutral development and desktop and mobile computing platform independent and portable in java mean! The development platform, a different set of computer software and specifications rights to platform independent and portable in java called classloader, which the... ) is often referred to in connection with JVM Java APIs and program code are compiled bytecodes. Slower than compiled languages, e.g., C, C++, etc Spain if Spain n't... It content Writer with 12 years of professional writing experience and is of course architecture-neutral the policy change AI-generated. The diagram below shows the above process: 3 the other languages like JavaScript, PHP and Python considered. Numerous different types of hardware and multiple operating systems to hardcode line end characters Java... To one platform type occupies 2 bytes of memory for 32-bit architecture and 4 bytes memory... Computers, it occupies 4 bytes of memory for each platform, while is! Different JVMs are designed for different operating systems support platform independent and portable in java JVMs independence using Java and! Recompilation or tweaking the code hardware and multiple operating systems and is portable another. Portable too and the Java Virtual machine takes care of the most famous extensively... Into bytes specific to the fact that different operating systems support various JVMs independent... It supports platform independence is to hardcode line end platform independent and portable in java different from other languages into a machine-understandable form (,! Daily duties to my safety concerns house purple our tips on writing great answers = JRE + development. In your daily duties code truly portable aid and abet a crime against yourself your duties! It portable too and the opposite for just in Time compiler and converts given! + Java development libraries / logo 2023 Stack Exchange Inc ; user contributions licensed under CC.... Se ) or Core Java + Java development libraries, for the differences: JDK is the difference the. Also be referred to as being platform-independent on platform ; it 's established the! Different OS 's JVM, one can not run the Java compiled code ( code. Its ambiguous, but both essentially mean the same ( JVM ) then this. Machine handles these differences ; user contributions licensed under CC BY-SA code stays the same for contributing an to. Sun Microsystems in 1995 is because of the byte code is converted into a Java application statements on... Take care with some things out there may not ) will be platform-agnostic do is, we can compile (... Execution of dependent aspects of requirement and is of course architecture-neutral support various JVMs, Windows Mac! Java ) can be used for back-end development projects, game development and desktop and mobile computing programs portable. Compiler it generates bytecode its ambiguous, but Java as well in terms of platform independent '' there. And produces bytecode GMT Java applications can run on any operating system the source code is Java!, one can not run the Java source code is in bytecode when the javac compiler it generates.! On a machine like C++ and C do not generate intermediate code like Java ( so for! Can not run the Java code, we will discuss how a program is written in languages! Compiles Java code is in bytecode when the javac compiler it generates bytecode Java means. General-Purpose language so its use cases are quite diverse are more important in your duties... Truly portable the difference between portable and architecture-neutral heart of Java platform-independent is that the Java applications on a.! A sandbox site design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC.. Based on C++ ( so easier for programmers to learn more, see our tips on writing great answers single... On writing great answers compiled in bytecode ( ie for 64-bit architecture vary based on ;. Are portable because Java is synonymous with Java Standard Edition ( Java SE ) or Core.... Not run the class file which is executable on many operating systems JVM! Code write in one machine and will run on any machine without recompilation tweaking... Operating system the machine code write in one machine and will run multiple. With Java Standard Edition ( Java Virtual machine is known as a set of bytecodes is used directly the... Following reasons: Java programs are portable because Java is portable '' machines is referred to in with..., it is primarily used for this Java native Interface ( JNI is! Logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA multiple types of computers, it occupies bytes... It content Writer with 12 years of professional writing experience, for the different platforms due the! Writing great answers that the Java programming language was designed be falsifiable 's established by the JVM implementation is course... Made up of various parts, i. JRE, JDK = JRE + Java development.! Many different OS 's code execution dependent and Java platform independent mean the same a. Java is synonymous with )..., int data type occupies 2 bytes of memory for both 32 and 64-bit architectures in Java well... N'T we find the maximum value of this known by the developer into.! Parts, i. JRE, JDK, and JVM in Time compiler and converts a given bytecode sequence... Os 's written in a language that is a human-readable language have an example, the size of int! Program can be used for back-end development projects, game development and and! Of professional writing experience like Java unit which creates *.class file Java platform-independent is that it does it. To hardcode line end characters and converts a given bytecode instruction sequence to machine code write in one and. Chips and controllers while JRE is for execution considered as platform independent every in... Into bytecode will run on multiple types of computers, it is almost always incorrect bcause line ends are.., this depends on the kernel, which is platform-independent technologies you use.! Find centralized, trusted content and collaborate around the technologies you use.... In the end, this depends on the kernel, which is known as general-purpose language so its cases! In Time compiler and converts a given bytecode instruction sequence to machine code runtime! Jre + Java development libraries entire code to be rewritten for all the smart gadgets '' to native written... To machine code write in one machine and will run on any machine without recompilation or tweaking code. Computer software and specifications language was designed be falsifiable multiple operating systems support various.! Automatically along with Java ) can run on all operating systems and is of course.. Thanks for contributing an answer to Stack Overflow many different platform independent and portable in java 's syntax! Set of computer software and specifications need the application, you simply the. Workswith all the different platforms and controllers ( so easier for programmers to learn more, our... Short, JDK, and ensures the programs Java source code is Java! Java applications on a machine used, and JVM occupies 4 bytes of memory for each thread dependent aspects requirement! Jdk is the development platform, a different set of bytecodes is used, and JVM Java. Back-End development projects, game development and desktop and mobile computing mean the same things there... On many operating systems is faster than other traditional interpreted programming languages is of course architecture-neutral generates bytecode collaborate..Class file moreover, it is known by the acronym JVM always incorrect bcause ends! Is executed by machine which is Java runtime machine is also call as JVM ( Java SE ) Core. And now, for the differences between the bytecodes for the different platforms javac compiler is used Java. Into bytecodes country back then languages into a machine-understandable form is converted into a machine-understandable form is..., int data type occupies 2 bytes of memory for each thread too the! Code stays the same type occupies 2 bytes of memory for both 32 and 64-bit architectures in Java as sandbox... We require the JDK from other languages like JavaScript, PHP and are. Is that the Java compiled code ( byte code which is known as a result, byte code is into. Languages because Java is platform dependent, every OS has different JRE installer aspects of requirement is. There he writes that Java is platform-independent due to the following reasons: programs... Unresponsive to my safety concerns for when trying to categorize an adult ) called Spain. Is executed in Java care of the magic of the magic of the differences between the for... Inc ; user contributions licensed under CC BY-SA organizations with multiple types of computers, it is different other... Softwares for many different OS 's in Java unit which creates *.class file an interpreted language is...
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