starts from jnlp but not from dtjava

Question

My app starts just fine if I download the .jnlp-file and double-click it or load it with javaws from url-to-file.jnlp. But I can not get it to start properly with the dtjava-script.

The following happens:

1. List item
2. Java starts (Java 7 - version 25)
3. The security-dialog shows correctly (the code is signed).
4. Then nothing! The process simply exits. No error-messages. No nothing.

I am developing on a Mac. But the same happens on Windows-machines.

Any thoughts?

Answer 1

Problem solved!

The suggestion to try a tiny "hello world" first led me to the idea to try to set the initial-heap-size in the jnlp-file. This caused the program not to exit on error and I saw that there was an exception related to some reloader code ... which lead me to think that something was causing a failed attempt to load a preloader.

Here is what my code was:

dtjava.launch(
    {
        url : jnlp_path,
        params: {
            'key5': 'value 5',
            'key6': 'value 6!' } },
    {
        javafx : '2.2+',
        toolkit: 'swing' },
    {} );

The solution was to simply remove javafx : '2.2+',

I guess the javafx-param was causing an attempt to first load a non-existent JavaFX preloader.