=====Date/Time Calculations in Scripts=====

See Java documentation for package java.time and java.time.format for more ideas

==== Time from the incomingValue =====

The timestamp of the event when the incoming value object is created is stored in the value object. This time is the milliseconds from the Java epoch of 1970-01-01T00:00:00Z.

<code JavaScript> 
timestamp = incomingValue.getTimeMillis();

//convert time in millseconds to a local time
valueObjectTime = java.time.Instant.ofEpochMilli(timestamp);
localZonedDateTime = java.time.LocalDateTime.ofInstant(valueObjectTime, java.time.ZoneId.systemDefault());

//print this as a local time and date using a time formatter
df=java.time.format.DateTimeFormatter.ofLocalizedDateTime(java.time.format.FormatStyle.MEDIUM); 

//use the formatter to make the output human readable
print("time of value object is "+df.format(localZonedDateTime));
output=df.format(localZonedDateTime);
</code>

==== Get the Current Local Time ====

For log4j logging, use a date formatter %d in the appender layout, for example:

<code xml>
	    <layout class="org.apache.log4j.PatternLayout">
		  <param name="ConversionPattern"  value="%d{ISO8601} %m %n" />
	    </layout>
</code>


In a script the current time can be printed using:

<code JavaScript>
 //simple formatter for the time
 df=java.time.format.DateTimeFormatter.ofPattern("HH:mm:ss"); 
 timenow =  java.time.LocalDateTime.now();
 print(df.format(timenow)+" Time of Event");
</code>