i found , thanks a lot !
Sub Click(Source As Button)
Dim mySession As JAVASESSION
Dim utilDate As JAVACLASS
Dim objUtilDate As JAVAOBJECT
Dim toto As String
Dim toto2 As String
Dim myMCollection As JavaMethodCollection
Dim myMethod As JavaMethod
Dim methodJava As JavaMethod
toto2 = "test"
Set mySession = New JAVASESSION
Set utilDate = mySession.GetClass("test/UtilEssai")
Set objUtilDate = utilDate.CreateObject
Messagebox (toto2)
Set myMCollection = utilDate.getClassMethods()
Set myMethod = myMCollection.getFirst()
Do
If myMCollection.count <> 0 Then
toto2 = myMethod.MethodName & " " & myMethod.signature
Messagebox (toto2)
If myMethod.MethodName = "essaiMethode" Then
Set methodJava = utilDate.GetMethod("essaiMethode","()Ljava/lang/String;")
toto = methodJava.Invoke(objUtilDate)
Messagebox (toto)
End If
End If
Set myMethod = myMCollection.getNext()
Loop While myMCollection.current <> 1
End Sub