How to execute an assembler command in Java or C++?

Question

Java

The function is passed a string containing a string with an assembler command (for example, "add r0, r1"), you must execute it. How can I do that? Is there any library to perform assembler inserts from a string? Is there no, how best to do it yourself? Or just a switch with a bunch of cases:

switch(asmComStr){
case "mov":
//mov 
break;
case "add":
//add
break;
}

? And also with parameters.
PS It doesn't matter if it's Java or C++, since the project is written in Java, but you can use the NDK to call methods from C++

Answer 1

This is what you need to write an assembler interpreter. And yes, it essentially consists of a bunch of cases.