Java decompiler vs java disassembler [closed]

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I am preparing core java and i got following doubt

javap is dis-assembler or de-compiler? what is the difference between them? which java CLI commands are used ?

possible duplicate of Is Java a Compiled or an interpreted programming language? — Sam Hanley
– Sam Hanley, Commented Jul 8, 2014 at 2:41
@sphanley not the same thing, the question you mention is whether Java is interpreted or compiled, here the question is about the utility javap — morgano
– morgano, Commented Jul 8, 2014 at 2:46
Side note: Oracle states here that "The javap command disassembles one or more class files." I'm not sure if they're following "technical" terminology, but it at least seems to match morgano's answer. — awksp
– awksp, Commented Jul 8, 2014 at 5:32
The javap command disassembles one or more class files and shows the byte code information. where as, Decompiling is something which converts these byte codes into java source code. — theinvisible
– theinvisible, Commented Jul 8, 2014 at 6:01
@morgano fair enough, I'm not familiar with javap so I assumed that it was a typo and this was just someone asking in poor english whether Java would be disassemlbled or decompiled. — Sam Hanley
– Sam Hanley, Commented Jul 8, 2014 at 13:04

morgano · Accepted Answer · 2014-07-08 04:04:09Z

9

Javap is just an "informal" dis-assembler, its output gives you information about the bytecode, but is not suitable for it to be used by an "assembler", it is rather for it to be read by a human.

The traditional difference (from the C language world):

Compiler: compiles a relatively high-level source code to assembly language
Assembler: compiles assembly code to machine code

take your conclusions for "de-compiler" and "dis-assembler"

Sometimes a software that does both steps (disassemble and decompile) is also called a decompiler, but it still depends on the context

edited Jul 8, 2014 at 4:04

answered Jul 8, 2014 at 2:42

morgano

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