Detect function parameters in java

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Hello everyone!
I am trying to make a compiler for a custom file format my editor uses, and I want it to be able to handle custom classes automatically. I already know how to find a class by name, but I want to know if it's possible to detect what parameters the classes constructor takes in, if it's not possible I will have to use String[] args or something like that and create a util class to read the input externally.

Thanks in advance!

Posted 10-Apr-14 18:49pm

HuggableAlien

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Richard MacCutchan 11-Apr-14 5:01am

Since the compiler and the file format are yours, and you have provided no details about either of them, it's impossible for us even to begin to guess what the issue might be.

HuggableAlien 11-Apr-14 5:07am

Basically what I'm asking is: is there a java function I can use, which can get me the parameters of a function? I know Constructor has a function called getParameterTypes which gives you an array of objects, but can you detect their names with some function?

Richard MacCutchan 11-Apr-14 5:18am

Get it from where? You really need to make your problem clearer in terms of coding, inputs and outputs.

HuggableAlien 11-Apr-14 5:24am

I'm mainly trying to get the parameter names of constructors. I don't know how I can do it, or if I even can, that's why I'm asking here if it's even possible to somehow get the names of parameters in a constructor

Richard MacCutchan 11-Apr-14 5:26am

Yes, look at the code and you will see them detailed. Or, read the documentation.

HuggableAlien 11-Apr-14 5:28am

I'm making a compiler that I want to be able to use custom classes people generate, and I want people to simply pass I the class name, and have the compiler find said class, it's constructor, and what order to pass parameters in to it

Richard MacCutchan 11-Apr-14 8:41am

So how do you expect anyone here to provide the answer? We have no idea how your compiler works or how it reads and parses its input.

HuggableAlien 11-Apr-14 15:19pm

The compiler reads in the class name from the file, uses Class.forName() to get the class the person wants, then Class.getConstructor() to get the classes constructor.

Richard MacCutchan 12-Apr-14 3:58am

Take a look at some of the decompilers listed in http://stackoverflow.com/questions/272535/how-do-i-decompile-java-class-files and this wiki.

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