What is .TMPL file extension?
Template file created for BlueJ, a Java development program; contains a default template with the source text of different classes accessible in BlueJ, some examples include: standard Java class, interface, Applet source, and project note; appears in different languages such as English, Chinese, and German.
TMPL files can be found in BLUEJ_HOME/lib/LANGUAGE/template and in the "new class" folder within the "templates" section. On a Mac, Ctrl-click the BlueJ application, select Show Package Contents, then Contents, then Resources, then Java, then the folder of your specific language (english), then templates. You should then see the TMPL files and the newclass folder.
Common TMPL Filenames:
html.tmpl - HTML template.
method.tmpl - Method template.
readme.tmpl - Description of your project.
stdclass.tmpl - Standard Java class template.
shell.tmpl - You should not modify this, it's for internal use only.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.