Hi,

First I want to say that I love the work you have done developing Ja.NET. This is a really useful tool to have in the tool box!

First issue is that I am getting a runtime exception when calling java code from a .NET 3.5 WPF application (code below).

A first chance exception of type 'java.lang.ExceptionInInitializerError' occurred in janet.awt.dll
java.lang.ExceptionInInitializerError: The type initializer for 'org.apache.harmony.awt.nativebridge.NativeBridge' threw an exception.

Second issue: Is there a way to add the Java gui component to a StackPanel? or (not prefered) a Windows Form?

Build steps:

1) create java app in Netbeans (JDK 1.6.0_16-b01)

2) C:\Ja.NET\bin\javac.exe -bam:javaapplication.dll .\JavaApplication\src\javaapplication\*.java

3) create C# project

4) add references to C:\Ja.NET\jre\bin\default\*.dll

5) add reference to javaapplication.dll

************************************ Java code ************************************

NewJPanel.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package javaapplication;

/**
 *
 * @author rvanamb
 */
public class NewJPanel extends javax.swing.JPanel implements javax.swing.event.ChangeListener {

    /** Creates new form NewJPanel */
    public NewJPanel(){
        this.setName("Form");
        this.setLayout(new javax.swing.BoxLayout(this, javax.swing.BoxLayout.Y_AXIS));

        this.jColorChooser1 = new javax.swing.JColorChooser();
        this.jColorChooser1.setName("jColorChooser1");
        //this.jColorChooser1.setLayout(this.getLayout());
        this.jColorChooser1.setAlignmentX(java.awt.Component.CENTER_ALIGNMENT);
        this.jColorChooser1.setAlignmentY(java.awt.Component.TOP_ALIGNMENT);
        this.add(this.jColorChooser1);

        this.jPanel1 = new javax.swing.JPanel();
        this.jPanel1.setName("jPanel1");
        //this.jPanel1.setLayout(this.getLayout());
        this.jPanel1.setAlignmentX(java.awt.Component.CENTER_ALIGNMENT);
        this.jPanel1.setAlignmentY(java.awt.Component.BOTTOM_ALIGNMENT);
        this.add(this.jPanel1);

        this.jColorChooser1.getSelectionModel().addChangeListener(this);

        this.validate();
    }

 
    public void stateChanged(javax.swing.event.ChangeEvent e) {
        this.jPanel1.setBackground(this.jColorChooser1.getColor());
    }

    // Variables declaration - do not modify
    private javax.swing.JColorChooser jColorChooser1;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration

}

Main.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package javaapplication;

/**
 *
 * @author rvanamb
 */
public class Main {

    public static javax.swing.JFrame show()
    {
        javax.swing.JFrame frame = new javax.swing.JFrame();
        frame.setSize(500, 550);
        NewJPanel newJPanel = new NewJPanel();
        frame.add(newJPanel);
        frame.validate();
        frame.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);

        return frame;
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        show();
    }

}

************************************ C# code ************************************

Window1.xaml

<Window x:Class="EmbededJava.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Embedded Java" Height="353" Width="343">
        <StackPanel Name="stackPanel1" Orientation="Vertical" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" MinHeight="300" MinWidth="300" Height="312" Width="320">
        <StackPanel Name="stackPanel2" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Orientation="Horizontal" >
            <Label>Java App 1</Label>
            <Button Height="23" Name="button_init_1" Width="75" Click="button_init_1_Click">Init</Button>
        </StackPanel>
        <StackPanel Name="stackPanel3" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Orientation="Horizontal" >
            <Label>Java App 2</Label>
            <Button Height="23" Name="button_init_2" Width="75" Click="button_init_2_Click">Init</Button>
        </StackPanel>
        </StackPanel>
</Window>
 

Window1.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace EmbededJava
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void button_init_1_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                javax.swing.JFrame frame = javaapplication.Main.show();
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine(ex.ToString());
            }
        }

        private void button_init_2_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                javaapplication.NewJPanel newJPanel = new javaapplication.NewJPanel();
                //this.stackPanel2.Children.Add(newJPanel);
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine(ex.ToString());
            }
        }
    }
}