How to use jpack

This Emacs package is not an new autocode feature for JDE but can improve JDE class templates by automatically generate the Java package statement.

Installation

Put jpack.el on your Emacs-Lisp load path and add following into your ~/.emacs startup file:

    (require 'jpack)

Usage

The jpack-generate-package-statement function is intended for being inserted in a class template instead of a hard-coded package statement. You must have set the jde-compile-option-classpath or jde-global-classpath variables (see the JDE user's guide included in the distribution for details) because jpack use their values to find the package coding. Your JDE class templates must also be customized to call (jpack-generate-package-statement).

For example:

I have set jde-global-classpath to

      ("~/java" "/jdk1.1.6/lib/classes.zip")

I have set jde-gen-class-buffer-template to:

	'("\"// \""
	 "(file-name-nondirectory buffer-file-name)"
	 "\" -- Give a short description here\" 'n"
	 "\"// $Id$\" 'n"
	 "'n"
	 "\"// Copyright (C) 1998 by David Ponce\" 'n"
	 "\"// Author:       David Ponce david.ponce@wanadoo.fr\" 'n"
	 "\"// Maintainer:   David Ponce david.ponce@wanadoo.fr\" 'n"
	 "\"// Created:      \""
	 "(format-time-string \"%B %d %Y\" (current-time)) 'n"
	 "'n"
	 "\"// Change history:\" 'n"
	 "\"//\" 'n"
	 "\"// $Log$\" 'n"
	 "\"//\" 'n"
	 "(jpack-generate-package-statement) 'n"
	 "'n"
	 "\"import java.lang.*;\" 'n"
	 "'n"
	 "\"/**\" 'n"
	 "\" * \"" 
	 "(file-name-nondirectory buffer-file-name) 'n"
	 "\" *\" 'n"
	 "\" * @author \" (user-full-name) 'n"
	 "\" * @version $Revision$\" 'n"
	 "\" */\" 'n>"
	 "\"public\" 'n>"
	 "\"class \""
	 "(file-name-sans-extension (file-name-nondirectory buffer-file-name))"
	 "\" {\" 'n>"
	 "'n>"
	 "\"/**\" 'n>"
	 "\" * Builds a new \"" 
	 "(file-name-sans-extension (file-name-nondirectory buffer-file-name))"
	 "\" instance.\" 'n>"
	 "\" */\" 'n>"
	 "\"public\" 'n>"
	 "(file-name-sans-extension (file-name-nondirectory buffer-file-name))"
	 "\"() {\" 'n>"
	 "\"        \" 'n>"
	 "\"}\" 'n>"
	 "'n>"
	 "\"}\" 'n>"
	 "'n>"
	 "\"// \" (file-name-nondirectory buffer-file-name) \" ends here.\" 'n")

Then, I edit a new class file by running

	M-x jde-gen-class-buffer RET ~/java/FR/test/MyClass.java RET

and the following lines where automatically generated:

	// MyClass.java -- Give a short description here
	// $Id$

	// Copyright (C) 1998 by David Ponce
	// Author:       David Ponce david.ponce@wanadoo.fr
	// Maintainer:   David Ponce david.ponce@wanadoo.fr
	// Created:      October 01 1998

	// Change history:
	//
	// $Log$
	//
	package FR.test; // Generated package name

	import java.lang.*;

	/**
	 * MyClass.java
	 *
	 * @author David Ponce
	 * @version $Revision$
	 */
	public	
	class MyClass {
  
	  /**
	   * Builds a new MyClass instance.
	   */
	  public
	  MyClass() {
            
	  }
  
	}

	// MyClass.java ends here.

The jpack-package-update command could be use to update the package statement if you move a file to a different directory (a new package!).

Last updated on 2/18/99 at 09:30:42