New version with page in and out counters for issue #1 and bug fix for

issue #2

-java -jar jetty-runner-9.2.9.v20150224.jar --log access.log --out systemout.log JavaMonWeb.war
+java -jar jetty-runner-9.2.9.v20150224.jar JavaMonWeb.war
 pause
\ No newline at end of file

-java -jar jetty-runner-9.3.7.v20160115.jar --log access.log --out systemout.log JavaMonWeb.war
+java -jar jetty-runner-9.3.7.v20160115.jar JavaMonWeb.war
 pause
\ No newline at end of file

@@ -80,6 +80,8 @@ public class OraMonRESTgetMetrics extends HttpServlet {
 				sb.append(",{\"name\":\"Cpu Usage (%)" + aStr + "\",\"value\":" + item.getCPUPercent() + "}");
 				sb.append(",{\"name\":\"OS Busy (%)" + aStr + "\",\"value\":" + item.getOsBusyPercent() + "}");
 				sb.append(",{\"name\":\"OS Load (#)" + aStr + "\",\"value\":" + item.getOsLoad() + "}");
+				sb.append(",{\"name\":\"OS Page In (KB/s)" + aStr + "\",\"value\":" + item.getPerSecondValue("VM_IN_BYTES", 2)/1024 + "}");
+				sb.append(",{\"name\":\"OS Page Out (KB/s)" + aStr + "\",\"value\":" + item.getPerSecondValue("VM_OUT_BYTES", 2)/1024 + "}");
 				sb.append(",{\"name\":\"OS Load per Cpu (#)" + aStr + "\",\"value\":" + item.getOsLoadPerCPU() + "}");
 				sb.append(",{\"name\":\"Logical Reads (#/s)" + aStr + "\",\"value\":" + item.getLogicalReadsPerSecond() + "}");
 				sb.append(",{\"name\":\"Consistent Gets (#/s)" + aStr + "\",\"value\":" + item.getPerSecondValue("consistent gets") + "}");

@@ -78,7 +78,10 @@ public class OraMon {
 	public double getOsBusyPercent() throws Throwable {
 		double idle = getPerSecondValue("IDLE_TIME", OSSTAT);
 		double busy = getPerSecondValue("BUSY_TIME", OSSTAT);
+		if(idle != 0 && busy != 0)
 			return 100*(busy/(busy+idle));
+		else 
+			return 0;
 	}
 	
 	// OS LOAD
@@ -105,7 +108,11 @@ public class OraMon {
 			return 0;
 		}
 		double buffCacheHitRatio = 1 - (physReadsCache/(conGetsCache + dbBlocksCache));
+		if(buffCacheHitRatio > 0)
 			return buffCacheHitRatio * 100;
+		else
+			return 0;
+		
 	}
 	
 	public double getCacheHitRatioPercent() throws Throwable {
@@ -119,7 +126,10 @@ public class OraMon {
 			return 0;
 		}
 		double cacheHitRatio = 1 - (physReads/(conGets + dbBlocks));
+		if(cacheHitRatio > 0)
 			return cacheHitRatio * 100;
+		else
+			return 0;
 	}
 	
 	public double getLogicalReadsPerSecond() throws Throwable {