Consuming Java webservice into .Net application

https://blogs.msdn.microsoft.com/bursteg/2008/07/19/how-to-call-a-java-ee-web-service-from-a-net-client/
http://www.codeproject.com/Articles/32313/How-to-invoke-Java-web-service-in-ASP-net-using-C

For ex:  your Java webservice contains method named JSMethod1. Refer below to see how we can access Java Webservice method in .net application
Once your java web service is created, in your .net application, We should have wsdl file in our website.
To perform this, right click on your .net project -> Add web reference. there give your wsdl url -> Go. Give some name( Ex: JavaWebService1)to your java webservice in your .net application 'Add web reference dialog'.
Once this is done you can invoke java methods in your .net application. 
Include the added JavaWebService1 in your .net page

using JavaWebService1;

Then create an object for that

JavaWebService1 objJavaWebService1 = new JavaWebService1();

Now you can call Java methods in your .net application.

objJavaWebService1 .JSMethod1();