## Copyright (C) 2019, 2023, 2024, 2026 Andrew Janke
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; If not, see <http://www.gnu.org/licenses/>.

function mustHaveJava
  try
    x = javachk ('jvm');
  catch
    stack = dbstack;
    fcn_name = stack(2).name;
    error ('%s: this function requires Java, but this Octave is not running a Java JVM', ...
      fcn_name);
  end_try_catch
endfunction
