Fix

@@ -27,28 +27,36 @@ public class JMXMonitor {
      * @param args
      */
     public static void main(String[] args) {
-        if (null == args || 5 != args.length)
-            System.exit(1);
-        String jmxHost = args[0];
-        String jmxPort = args[1];
-        String user = args[2];
-        String passwd = args[3];
-        String service = args[4];
-
-        String rawUrl = MessageFormat.format(RAW_URL, jmxHost, jmxPort);
-        JMXServiceURL serviceURL = null;
         try {
-            serviceURL = new JMXServiceURL(rawUrl);
-        } catch (MalformedURLException e) {
-            System.exit(1);
-        }
-        Connection con = new Connection(rawUrl, jmxHost, Integer.valueOf(jmxPort), serviceURL, user, passwd, service);
+            if (null == args || 5 != args.length)
+                System.exit(1);
+            String jmxHost = args[0];
+            String jmxPort = args[1];
+            String user = args[2];
+            String passwd = args[3];
+            String service = args[4];
 
-        try {
-            System.out.println(con.readJvmData());
+            String rawUrl = MessageFormat.format(RAW_URL, jmxHost, jmxPort);
+            JMXServiceURL serviceURL = null;
+            try {
+                serviceURL = new JMXServiceURL(rawUrl);
+            } catch (MalformedURLException e) {
+                e.printStackTrace();
+                System.exit(1);
+            }
+            Connection con = new Connection(rawUrl, jmxHost, Integer.valueOf(jmxPort), serviceURL, user, passwd, service);
+
+            try {
+                System.out.println(con.readJvmData());
+            } catch (Exception e) {
+               e.printStackTrace();
+                System.exit(1);
+            }
         } catch (Exception e) {
+            e.printStackTrace();
             System.exit(1);
         }
+
     }
 
 }

@@ -24,7 +24,7 @@ public class Connection {
     private MBeanServerConnection serverConnection;
     private Map<String, ObjectInstance> beanMap = new HashMap<String, ObjectInstance>();
     private DecimalFormat df = new DecimalFormat("0.00");
-    private JvmData jvmData=new JvmData();
+    private JvmData jvmData = new JvmData();
 
 
     public Connection(final String rawUrl, final String hostName, final int port, final JMXServiceURL serviceURL, final String username,
@@ -46,6 +46,7 @@ public class Connection {
             serverConnector = JMXConnectorFactory.connect(this.serviceURL, envMap);
             serverConnection = this.serverConnector.getMBeanServerConnection();
         } catch (IOException e) {
+            System.out.println(e.getMessage());
             disConnect();
         }
     }
@@ -86,8 +87,9 @@ public class Connection {
         ObjectInstance threadInstance = this.serverConnection.getObjectInstance(new ObjectName("java.lang:type=Threading"));
         beanMap.put("thread", threadInstance);
 
+
         //Memory Bean
-        ObjectInstance oldGenInstance = this.serverConnection.getObjectInstance(new ObjectName("java.lang:type=MemoryPool,name=PS Old Gen"));
+        ObjectInstance oldGenInstance = this.serverConnection.getObjectInstance(new ObjectName("java.lang:type=MemoryPool,name=CMS Old Gen"));
         beanMap.put("oldGen", oldGenInstance);
     }
 
@@ -122,6 +124,7 @@ public class Connection {
             jvmData.setThreadPeak(peak);
             jvmData.setThreadCount(count);
         } catch (IOException e) {
+            System.out.println(e.getMessage());
             e.printStackTrace();
         }
     }
@@ -140,6 +143,7 @@ public class Connection {
             jvmData.setMaxOldGen(maxOldGenMemory);
 
         } catch (IOException e) {
+            System.out.println(e.getMessage());
             e.printStackTrace();
         }
     }
@@ -154,6 +158,7 @@ public class Connection {
             geThreadInfo();
             return JSON.toJSONString(jvmData);
         } catch (Exception e) {
+           e.printStackTrace();
             System.exit(1);
         } finally {
             disConnect();