remove javaOSbean, use it directly

Author: scivision

+stdlib/cpu_load.m

@@ -10,7 +10,7 @@
 
 function L = cpu_load()
 
-b = javaOSBean();
+b = javaMethod("getOperatingSystemMXBean", "java.lang.management.ManagementFactory");
 
 if stdlib.java_api() < 14
   % https://docs.oracle.com/en/java/javase/21/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html#getSystemCpuLoad()

+stdlib/private/javaOSBean.m

@@ -20,7 +20,7 @@
 catch e
   switch e.identifier
     case {'MATLAB:memory:unsupported', 'Octave:undefined-function'}
-      b = javaOSBean();
+      b = javaMethod("getOperatingSystemMXBean", "java.lang.management.ManagementFactory");
 
       if stdlib.java_api() < 14
         bytes = b.getFreePhysicalMemorySize();

+stdlib/ram_free.m

@@ -18,7 +18,7 @@
   bytes = ci.TotalPhysicalMemory;
   delete(h);
 elseif stdlib.has_java()
-  b = javaOSBean();
+  b = javaMethod("getOperatingSystemMXBean", "java.lang.management.ManagementFactory");
 
   if stdlib.java_api() < 14
     bytes = b.getTotalPhysicalMemorySize();