JPythonJB is a JBuilder OpenTool which integrates JPython into JBuilder 3.5. One can use Python commands to manipulate JBuilder in various ways: add menu items, add files to projects, scan source files, etc.
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The consoles (both interactive and script execution) have been incorporated into JBuilder's MessageView, script execution no longer blocks JBuilder until it's finished, the JPython menu has been moved into the Tools menu, the Python file type registration is done properly, and the 'Create Python script' command uses a file chooser dialog.