Structural Search for all the (Object/Class) method parameters

Hi,

Could you any one let us know syntax for Structural Search to final all the methods with parameters..

Also, once the parameters are found, we need to rename the parameters in case they don't start with variable prefix i.e 'a'

e.g

if the orginial method is some thing like this

public void setJournal(Journal journal)
{
this.journal = journal;
}

then through Structural Search and Replace we are looking to convert it to

public void setJournal(Journal aJournal)
{
this.journal = aJournal;
}