Deprecate java_invoke, replace with javaMethod. Update all m-files to use javaMethod. * scripts/deprecated/java_invoke.m: New m-file with warning about function being deprecated. * libinterp/octave-value/ov-java.cc(Fjava_invoke, FjavaMethod): Remove java_invoke. Replace body of javaMethod with old java_invoke code. * libinterp/octave-value/ov-java.cc(do_java_invoke): Rename to do_javaMethod. * libinterp/octave-value/ov-java.cc(do_java_create): Rename to do_javaObject. * libinterp/octave-value/ov-java.h(do_java_invoke, do_java_create): Rename prototypes for functions to do_javaMethod and do_javaObject respectively. * scripts/deprecated/javafields.m, scripts/deprecated/javamethods.m, scripts/deprecated/module.mk, scripts/general/fieldnames.m, scripts/general/methods.m, scripts/java/errordlg.m, scripts/java/helpdlg.m, scripts/java/inputdlg.m, scripts/java/javaArray.m, scripts/java/javaaddpath.m, scripts/java/javaclasspath.m, scripts/java/javamem.m, scripts/java/javarmpath.m, scripts/java/listdlg.m, scripts/java/msgbox.m, scripts/java/questdlg.m, scripts/java/warndlg.m: Replace java_invoke calls with javaMethod calls.

--- a/scripts/general/fieldnames.m
+++ b/scripts/general/fieldnames.m
@@ -46,7 +46,7 @@
     ## Call internal C++ function for structs or Octave objects
     names = __fieldnames__ (obj);
   elseif (isjava (obj) || ischar (obj))
-    names_str = java_invoke ("org.octave.ClassHelper", "getFields", obj);
+    names_str = javaMethod ("getFields", "org.octave.ClassHelper", obj);
     names = strsplit (names_str, ';');
   else
     error ("fieldnames: Invalid input argument");