what is the difference between machine code and byte code

[shilong]

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what is the difference between machine code and byte code, I heard that Whenever we write any programing code and pass it on to the computer to execute that it convert it into some machine code, and forward the output to us, Is this only procedure does it does then what is role of byte code and machine code.

[Pauline]

Generally, "machine code" refers to the data that can be executed by a certain computer, while "bytecode" refers to data that can be executed by a virtual machine. JAVAC compiles the java file and converts the program in bytecode (machine independent). The virtual machine takes the bytecode and produces machine code appropriate for the actual machine it is running on.

[Adley]

Byte Code is in the form of binary codes like 0/1 whether ASCII code is in the form of numeric digits which is assigned to characters and alphabets. Byte code is platform independent where ASCII codes are platform dependent. IT is different to a byte code interpreter.

Consider the following C function:

int sum() {
   return 5 + 6;
}

This will be compiled directly machine code. The exact instructions on say x86 and ARM processors will be different.

[Khushal]

In a bytecode interpreter, the instruction format is usually designed for very fast "parsing" using shift and mask operators. Byte-code is a sort of intermediate code that is more abstract than machine code. It is often treated as a binary file containing an executable program much like an object module , which is a binary file containing a machine code produced by compilers.The interpreter, after "parsing" (I prefer "decoding") the instruction, immediately updates the state of the virtual machine and then begins decoding the next instruction. So after the bytecode gets processed in an interpreter, no remnant remains.