update

src/main/java/com/its/pis/ui/MainUI.java

@@ -39,7 +39,7 @@ public class MainUI {
 
     private SubUIController subUIController = null;
     private JFrame jFrame = null;
-    OperatingSystemMXBean osBean = null;
+    private final OperatingSystemMXBean osBean = (com.sun.management.OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
     private Timer timer;
     private Long tick = Long.valueOf(0);
     private TbPisInfr selObj = null;
@@ -82,10 +82,22 @@ public class MainUI {
     }
 
     public void displayResource() {
+        //OperatingSystemMXBean osBean = (OperatingSystemMXBean)ManagementFactory.getOperatingSystemMXBean();
         long memoryUsage = Math.round(((double) (osBean.getTotalPhysicalMemorySize() - osBean.getFreePhysicalMemorySize())) / (double) osBean.getTotalPhysicalMemorySize() * 100.0);
         lblMemoryUsage.setText(String.valueOf(memoryUsage));
         double cpuLoad = osBean.getSystemCpuLoad();
-        lblCpuRate.setText(String.valueOf(Math.round(cpuLoad * 100.0)));
+        if (cpuLoad >= 0.0 && cpuLoad <= 1.0) {
+            lblCpuRate.setText(String.valueOf(Math.round(cpuLoad * 100.0)));
+        } else {
+            lblCpuRate.setText("---");
+        }
+//        if (osBean instanceof com.sun.management.OperatingSystemMXBean) {
+//            com.sun.management.OperatingSystemMXBean nativeOsBean = (com.sun.management.OperatingSystemMXBean)osBean;
+//            log.error("CPU LOAD: {}", Math.ceil(nativeOsBean.getSystemCpuLoad() * 100.0));
+//        }
+//        else {
+//            log.error("You're not using Oracle Java nor using the native library. You won't be able to read some native data");
+//        }
     }
 
     public MainUI(JFrame jFrame) {
@@ -98,7 +110,9 @@ public class MainUI {
             subUIController.setVisible(false);
         }
 
-        osBean = ManagementFactory.getPlatformMXBean(OperatingSystemMXBean.class);
+        //OperatingSystemMXBean mbean = (com.sun.management.OperatingSystemMXBean)ManagementFactory.getOperatingSystemMXBean();
+        //osBean = ManagementFactory.getPlatformMXBean(OperatingSystemMXBean.class);
+        //osBean = (OperatingSystemMXBean) ManagementFactoryHelper.getOperatingSystemMXBean();
         try {
             Font font = Font.createFont(Font.TRUETYPE_FONT, new File("fonts/D2Coding.ttc"));
             GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();