Is there a simple or reliable method to get the total memory of the computer and / or components or models of the computer components?
I searched a lot and the only thing I found was some articles talking about the class com.sun.management.OperatingSystemMXBean however it is "protected" and this generates an error in the IDEs and I do not know if it is safe to ignore this error, is giving some error is because something is wrong.
After giving a study I was able to develop a method that does not generate errors and works perfectly using Reflection and class OperatingSystemMXBean of java.lang
private long getFreeMemoryComputer() {
try {
OperatingSystemMXBean system = ManagementFactory.getOperatingSystemMXBean();
Method getFreeMemory = system.getClass().getMethod("getFreePhysicalMemorySize");
getFreeMemory.setAccessible(true);
return (long) getFreeMemory.invoke(system);
} catch (Exception e) {
return -1;
}
}
private long getTotalMemoryComputer() {
try {
OperatingSystemMXBean system = ManagementFactory.getOperatingSystemMXBean();
Method getTotalMemory = system.getClass().getMethod("getTotalPhysicalMemorySize");
getTotalMemory.setAccessible(true);
return (long) getTotalMemory.invoke(system);
} catch (Exception e) {
return -1;
}
}