Create a library of functions hidden from the path

Suppose I have written 40 functions and I don't want 40 m-files but I want to put them in 1 big file. Suppose I want to use the functions from this big file in another function. So something like a library with functions that you want to access from a m-file.

A hack which does exactly what you want but is probably quite
inefficient .... The code allows you to *import* sub/nested
function contained within a single m-file into the current
workspace without having to access them from a structure.

% M_IMPORT_TEST
%
% A m file function library compatible with
% m_import.
%
% Usage
%
%   m_import m_import_test
%   whos % See the new functions in the workspace
%   a = fun1();  % Use fun1
%   b = fun2();  % Use fun2
%   c = fun3();  % Use fun3
function lib = m_import_test

     lib = { @fun1 @fun2 @fun3 };

     function fun1
         disp('1');
     end

     function fun2
         disp('2');
     end

     function fun3
         disp('3');
     end

end

% M_IMPORT
%
% import mfiles from a library into the current workspace.
%
% Arguments
%   fname   -   The name of the file where the library lives
%
% The library function must return a cell array of function
% handles. This function then inserts into the *callers*
% workspace a set of function handles as variables with the
% same name as the original functions.
%
function m_import(fname)
     funs = feval(fname);
     for i = 1:length(funs)
        % Strip of the function prefix
        [pathstr,name,ext,versn] = fileparts(func2str(funs{i}));
        % Place the function in the callers workspace
        assignin('caller', name, funs{i});
     end
end

Adding new java classes to your matlab path.

There are three things you can do. Either add the full path to the jar or class files directory into classpath.txt

$matlabroot/java/jarext/xalan.jar
$matlabroot/java/jarext/xercesImpl.jar
$matlabroot/java/jarext/xml-apis.jar
$matlabroot/java/jarext/groovy-all-1.0-jsr-01.jar
mac=/System/Library/Java
c:\projects\myjars\mycooljavaproject.jar

or use the dynamic java classpath commands.

javaaddpath