I created an Array of Object from the .Net environment as follows :
Dim names(2) As User
names(0) = New User("param1", "param2", "param3")
names(1) = New User("param1", "param2", "param3")
Here I have created a User class with 3 String variables. I also created a User class at Java environment with same String variables and the Java class accepts User[] user. I generated webservice based on the Java class and forwrading the parameter from the .Net environment as follows :
Dim MyService As localhost.ReadObject = New localhost.ReadObject
Dim resultString As String = MyService.ReadParameters(names)