In NetBeans 6.1, the Run panel of project properties dialog for a standard Java application project has a checkbox titled 'Run with Java Web Start'. If this box is checked, then the ide generates all the necessary artificats (jnlp file) with appropriate entries. The ide also supports testing the configuration by running the app using java web start when the app is run from within the ide (by selecting Run command from the project's context menu). But the ide does not support deploying the app to a web or app server; in fact the ide does not generate war files even. The deployment should be done manually.