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Yes if there is no executable package available for your platform and you have the means to adapt and compile the source code so that it can be used on your platform.
There is no such thing as a platform-free programming language. The correct term is platform-independent language. It simply means that the same source code can be compiled or interpreted upon any platform; the code is not machine-dependent.
Java is a platform independent language and hence the code written in/for windows can be run without much rework in Unix or Mac. The compiler takes the source code a byte code is created after compilation. This bite code can be interpreted by any JVM and this gives java its platform independence. Hence it is preferred for cross-platform apps.
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byte code is an intermediate language,it is compiled code of java source program, it is virtual machine code,it is a platform independent code which doesn't have any instructions from os,and it is a portable code,and it is a collection of mnemonics.
Yes. Code must still be written specifically to suit each platform, however C++ itself is not platform dependant. To port code between platforms, the source code needs to employ compiler directives (#ifdef/#ifndef) to filter the required code to suit the current platform, and the code must be compiled separately upon each platform. By contrast, Java need only be compiled once on any platform, and the resultant byte code can then be interpreted and executed upon any machine that supports a Java Virtual Machine implementation. This makes it much easier to produce cross platform applications, but performance will suffer as a result of the interpretation.
Java source code is compiled into .class files, which are used by the Java Virtual Machine (JVM). The format of the .class file is the same for all platforms, and so the source code can be compiled the same way on each platform. The JVM, however, needs to be written to run on a specific platform. This is the part which converts Java bytecode to native bytecode, and is why you need to download the JRE (which contains the JVM) for a specific platform. Java source code is compiled into .class files, which are used by the Java Virtual Machine (JVM). The format of the .class file is the same for all platforms, and so the source code can be compiled the same way on each platform. The JVM, however, needs to be written to run on a specific platform. This is the part which converts Java bytecode to native bytecode, and is why you need to download the JRE (which contains the JVM) for a specific platform.
True. Java source code is called "platform independent" because it runs on top of the Java Runtime Environment (JRE). In order for this to work, a special JRE must be created for the platform you want to run a Java program on.
Java compiles to Java byte code; the native language of the Java virtual machine (JVM). The JVM is essentially just an interpreter for Java byte code. Each supported platform has its own JVM implementation so the same Java byte code can be executed upon any platform without further compilation, unlike C++ where source code must be compiled separately for each supported platform. However, interpretation results in slower execution speed and higher resource consumption than with C++ which compiles to native machine code.
There is no such thing as a platform-free programming language. The correct term is platform-independent language. It simply means that the same source code can be compiled or interpreted upon any platform; the code is not machine-dependent.
When the code is targeted towards a specific machine architecture. Machine code is entirely machine-dependent, as is the low-level assembly language used to produce that machine code. High-level languages are not machine dependant, however source code can still be targeted towards a specific architecture or platform. Such code is non-portable, however many high-level languages provide methods to filter machine-dependant or platform-dependant code such that the same source code can be compiled on different machines and platforms.