How to acquire the method's parameters?

Hi, i'm a newbie in bcel. recently i have to develop an tool, something like
aop weaver. i want to acquire the method's parameters. such as:

m1(int i, String j, Object o )
{
    ......
    m1_org( i, j, o ); //created by bcel
    ......
}

m1_org(int i, String j, Object o)
{
   ......
}

that is, in m1() method, i want to create a method invoking m1_org(), and
the parameters are the same with m1(). 

i have read a lot about bcel docs, and know how to invoke m1_org() method,
but the problem is, i don't know how to acquire and confirm the parameters.
i think of localvariabletable, however, i don't know how to do it excatly.
 can anyone give me some suggestions. any help will be appreciated. looking
forwards your kindly reply!
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