Getting the System specific Details using java API:

   In this topic I want to write a sample code to get the system specific information by using java interface  OperatingSystemMXBean which is available in  com.sun.management package.

Copy the below code and place it in eclipse

import java.io.IOException;

import java.lang.management.ManagementFactory;

import java.nio.file.FileStore;

import java.nio.file.FileSystems;

import com.sun.management.OperatingSystemMXBean;

@SuppressWarnings("restriction")

public class Test {

   public static void main(String[] args) throws Exception {

OperatingSystemMXBean osBean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();

System.out.println("====CPU Information===");

osBean.getSystemLoadAverage();

osBean.getSystemCpuLoad();

Thread.sleep(5000);

System.out.println("Number of cores, :" + osBean.getAvailableProcessors());

System.out.println("CPU LOAD         :" + osBean.getSystemCpuLoad());

System.out.println("===Memory Details==");

System.out.println("TOTAL MEMORY "+ osBean.getTotalPhysicalMemorySize());

System.out.println("AVialable " + osBean.getFreePhysicalMemorySize());

Long toalDiskSpace = 0L;

Long freeSpace = 0L;

Long converter = 1073741824L;

for (FileStore store : FileSystems.getDefault().getFileStores()) {

System.out.println(store);

System.out.println("\t" + store.name());

System.out.println("\t" + store.type());

System.out.println("\t Total Space" + (store.getTotalSpace() / converter) + "GB");

System.out.println("\t Free Space" + (store.getUnallocatedSpace() / converter) + "GB");

toalDiskSpace = toalDiskSpace + store.getTotalSpace();

freeSpace = freeSpace + store.getUnallocatedSpace();

}

System.out.println("===Disk Details===");

System.out.println("toalDiskSpace " + (toalDiskSpace / converter)+ "GB");

System.out.println("freeSpace " + (freeSpace / converter) + "GB");

System.out.println("Used Space " + (toalDiskSpace - freeSpace)/ converter + "GB");

}

}

You will get some errors so in eclipse click on window -> preferences -> java -> compiler -> Errors/Warnings -> Deprecated and restricted API change the drop down values to warning -> click on Apply - >ok

You can find the API 

 https://docs.oracle.com/javase/8/docs/jre/api/management/extension/com/sun/management/OperatingSystemMXBean.html

You will get some errors so in eclipse click on window -> preferences -> java -> compiler -> Errors/Warnings -> Deprecated and restricted API change the drop down values to warning -> click on Apply - >ok

You can find the API 

 https://docs.oracle.com/javase/8/docs/jre/api/management/extension/com/sun/management/OperatingSystemMXBean.html