How to call Collection.add(E o) from JNI?

Question

Hi.
JNI + Generics ???
I just managed it to call methods like MyClass.f(String a) but i cannot figure out how to call methods with generics in its signatures.
The signature string i used for the former method is: "(Ljava.lang.String;)V" and it works well but what is the corresponding signature string for Collection.add(E o)??
Thanks in advance.

Answer 1

Hi,
I think it's a compiler problem here is a Generic class :
public class test<T> {
        public void add(T o) {
                System.err.println(o);
        public static  void main(String[] args) {
                new test<Integer>().add(5);
}I compiled it with javac (1.5.0_05)
Then decompile it with jad
// Decompiled by Jad v1.5.8e. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/kpdus/jad.html
// Decompiler options: packimports(3)
// Source File Name:   test.java
import java.io.PrintStream;
public class test
    public test()
    public void add(Object obj)
        System.err.println(obj);
    public static void main(String args[])
        (new test()).add(Integer.valueOf(5));
}As you can see T is now Object
--Marc (http://jnative.sf.net)