Accessing a parameter in a method's body

[nadz]

In a simple class like this :

public class Test1 {
static int res;

public static void main(String[] args) {
foo(2);
}

public static int foo(int num) {
res = num + 2;
return res;
}
}

How can i access the value of the parameter in red in the method call 'foo(x)' (here this value is 2) ? I can replace this statement and his parameter "$1" using MethodCall.replace(...) but i don't succeed to get the value of this "$1" parameter. How can I do this ?

Thank you very much !

[nadz]

For example i have the class :

public class Test1 {
 static int res;

 public static void main(String[] args) {
 foo (2);
 }

 public static int foo(int num) {
 res = num + 2;
 return res;
 }
}

I want to get the parameter value of foo (here '2') and the returned value (here '4') and then transform the class by adding it 2 fields with these values like this :

public class Test1 {
 static int res;
 static int paramValue = 2;
 static int returnValue = 4;
 public static void main(String[] args) {
 foo (2);
 }

 public static int foo(int num) {
 res = num + 2;
 return res;
 }
}

Is there a way to perform this with Javassist ?

Many thanks for any help !

[chiba]

paramValue and returnValue are determined at runtime.
Since those values are not available during compile/load time,
you cannot obtain them by Javassist.

Although those values can be guessed by performaing
constant propagation since they are constant values,
Javassist does not support it.