Sage-Tips

What is the meaning of write once run anywhere?

Java applications are called WORA (Write Once Run Anywhere). This means a programmer can develop Java code on one system and can expect it to run on any other Java-enabled system without any adjustment.

Does C run everywhere?

Although C program cannot be compiled once and run “everywhere”, but Intel and AMD processors are really the same place in this sense. For example you don’t really worry about a single executable (say a game installer) wont be able to run on your windows machine regardless of it’s Intel or AMD inside.

How compile once run anywhere concept is implemented in Java?

Firstly, Java source code is compiled into bytecode when we use the javac compiler. The bytecode gets saved on the disk with the file extension . class. When the program is to be run, the bytecode is converted, using the just-in-time (JIT) compiler.

What makes it possible for Java to implement the principle of write once run everywhere?

Well, it translates your code into Machine code which the Operating System could understand. Therefore JVM is platform dependent since every OS has a different Machine code. So, basically you write a Java Program only once and can be used/run everywhere.

Is C an operating system?

The UNIX operating system’s development started in 1969, and its code was rewritten in C in 1972. The GNU operating system itself was started using C and Lisp programming languages, so many of its components are written in C.

Why Java is considered as write once run everywhere?

The “Write Once, Run Everywhere” slogan refers to the fact that an application written is Java can be run on any hardware which has the Java Virtual Machine (JVM), and that the JVM is now licensed to hundreds of operating systems vendors systems including Microsoft for Windows.

Why do we need a compiler for C program?

C is a mid-level language and it needs a compiler to convert it into an executable code so that the program can be run on our machine. How do we compile and run a C program? Below are the steps we use on an Ubuntu machine with gcc compiler. We first create a C program using an editor and save the file as filename.c

How do I compile and run a C program in Ubuntu?

How do we compile and run a C program? Below are the steps we use on an Ubuntu machine with gcc compiler. We first create a C program using an editor and save the file as filename.c $ vi filename.c. The diagram on right shows a simple program to add two numbers. Then compile it using below command. $ gcc –Wall filename.c –o filename

Is it possible to compile and run Java on multiple computers?

It isn’t. Instead, the reference implementation of Java can be compiled once and run anywhere by compiling down to a bytecode for a Java Virtual Machine, also called the JVM.

How does a C program become an executable program?

There are four phases for a C program to become an executable: 1 Pre-processing 2 Compilation 3 Assembly 4 Linking More