Creating instance and calling instance methods

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Javonet lets you create instances of any type from JAR library. Assuming we have a custom JAR library with the following class inside

public class TestClass {
    public TestClass() {

    public static int MyStaticField;

    public int MyInstanceField;

    public static String SayHello(String name) {
        return "Hello " + name;

    public static int MethodExpectingPrimitiveInt(int arg) {
        return arg * 2;

    public static int MethodExpectingClassInteger(Integer arg) {
        return arg * 2;

    public int MultiplyByTwo(Integer arg) {
        return arg * 2;

    public <T> T MyGenericMethod(T arg1)
        return arg1;

To create instance and invoke instance method from this class:

I code in:
// Todo: activate Javonet
// add reference to library
Javonet.AddReference(resourcesDirectory + @"\TestClass.jar");

// create Java object
JObject sampleObject = Javonet.New("TestClass");

// invoke instance method
int response = sampleObject.Invoke<int>("MultiplyByTwo", 50);

// write result to console

Javonet calls are very similar to regular .NET or Java calls, with a little bit of reflection style. Value-type results are automatically converted into JAR library types so you can safely assign them to JAR library variables. Reference-type results must be assigned to NObject\JObject variable.

Any calls to .NET or Java objects using Javonet can be shortened and simplified using Javonet Fluent interface.

See Live Example!