How to get PC Hardware information using Java or CMD

Question

I am creating a Java Desktop Application that is to report the Performance & Statistics of the Windows Machine (XP, Vista and W7).

Using Java or the Command Line how do I get the following information:

• Manufacturer (Dell, HP...)
• Modal Number
• Processor Type
• Processor Size
• System Type
• Storage Space
• RAM Total
• RAM Free or Used

And a reference page for this would be great, in case I find more information I want to list.

Answer 1

Most of this should be queryable with WMI (which is what systeminfo very likely uses under the hood anyway – it just tends to gather all there is instead of specific information).

I hacked together the following small batch file. Not quite sure what you mean with Processor Size – no software will go into the computer case and measure the die dimensions, but maybe this comes close. You can do a set at the end of the batch file to view all created environment variables. Maybe some of them help:

@echo off
setlocal enableextensions enabledelayedexpansion

for /f "delims=" %%l in ('wmic computersystem get Manufacturer^,Model^,SystemType^,TotalPhysicalMemory /format:list') do >nul 2>&1 set "System_%%l"
for /f "delims=" %%l in ('wmic cpu get * /format:list') do >nul 2>&1 set "CPU_%%l"
for /f "delims=" %%l in ('wmic os get FreePhysicalMemory^,TotalVisibleMemorySize /format:list') do >nul 2>&1 set "OS_%%l"
set /a OS_UsedPhysicalMemory=OS_TotalVisibleMemorySize-OS_FreePhysicalMemory

for /f "delims=" %%l in ('wmic volume get DriveLetter^,FreeSpace /format:list') do (
    >nul 2>&1 set "TEMP_%%l"
    if "!TEMP_DriveLetter:~1,1!"==":" if defined TEMP_FreeSpace set StorageSpace_!TEMP_DriveLetter:~0,2!=!TEMP_FreeSpace:~0,-1!&set TEMP_DriveLetter=&set TEMP_FreeSpace=
)

echo Manufacturer: %System_Manufacturer%
echo Model: %System_Model%
echo Processor Type: %PROCESSOR_ARCHITECTURE%
echo Processor Size: %CPU_AddressWidth%
echo System Type: %System_SystemType%
echo Storage Space:
set StorageSpace_
echo RAM total: %OS_TotalVisibleMemorySize% KiB
echo RAM free: %OS_FreePhysicalMemory% KiB
echo RAM used: %OS_UsedPhysicalMemory% KiB

Side note: This is free from locale-specifics, so it should work everywhere (as opposed to things like dir | find "free" for example). Code can be found in my SVN repository.