How to Format Date In Groovy Script?

To format a date in Groovy script, you can use the SimpleDateFormat class which allows you to specify a pattern for formatting dates. You can create an instance of SimpleDateFormat and then use the format() method to format a date object according to your desired pattern. For example, you can use the pattern "dd/MM/yyyy" to format a date as day/month/year. Here is an example code snippet:

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import java.text.SimpleDateFormat

def date = new Date()
def sdf = new SimpleDateFormat("dd/MM/yyyy")
def formattedDate = sdf.format(date)

println "Formatted date: $formattedDate"

In this example, we create a Date object and then create a SimpleDateFormat object with the pattern "dd/MM/yyyy". We then call the format() method on the SimpleDateFormat object passing in the date object to get the formatted date string. Finally, we print out the formatted date.

What is the purpose of using the TimeCategory class for date-time manipulations in Groovy script?

The TimeCategory class in Groovy allows for easy date-time manipulations by providing convenient and readable syntax for common operations such as adding time, subtracting time, formatting dates, and more. It simplifies working with dates and times in Groovy scripts by abstracting away the complexities of working with the Java Date and Calendar classes. This makes it easier to write concise and expressive code for date-time manipulations.

What is the purpose of formatting dates in Groovy script?

Formatting dates in a Groovy script allows you to display dates in a human-readable format, manipulate dates, or convert dates from one format to another. By formatting dates, you can present them in a way that is easier for users to understand, or use them in calculations and comparisons. This can be helpful in various scenarios such as generating reports, displaying timestamps, or performing date arithmetic.

How to handle date formats with time zones in Groovy script?

In Groovy, you can handle date formats with time zones using the SimpleDateFormat class and the TimeZone class. Here is an example of how to handle date formats with time zones in a Groovy script:

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import java.text.SimpleDateFormat
import java.util.TimeZone

// Get the current date and time in UTC
def dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"))
def currentDateUTC = dateFormat.format(new Date())

println "Current date and time in UTC: $currentDateUTC"

// Convert date and time from UTC to a specific time zone
def targetTimeZone = "America/New_York"
dateFormat.setTimeZone(TimeZone.getTimeZone(targetTimeZone))
def currentDateTargetTimeZone = dateFormat.format(new Date())

println "Current date and time in $targetTimeZone: $currentDateTargetTimeZone"

In this script, we first create a SimpleDateFormat object with the desired date format ("yyyy-MM-dd HH:mm:ss") and set the time zone to UTC using setTimeZone(TimeZone.getTimeZone("UTC")). We then format the current date and time in UTC and print it.

Next, we convert the date and time from UTC to a specific time zone (in this case, "America/New_York"). We set the time zone to the target time zone using setTimeZone(TimeZone.getTimeZone(targetTimeZone)) and format the current date and time in the target time zone before printing it.

You can adjust the date format and target time zone as needed for your specific requirements.

How do you convert a string to a date in Groovy script?

In Groovy, you can convert a string to a date using the Date.parse() method. You can specify the format of the date string using a SimpleDateFormat pattern.

Here is an example of how you can convert a string to a date in Groovy:

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def dateString = "2022-03-15"
def dateFormat = "yyyy-MM-dd"
def date = Date.parse(dateFormat, dateString)

println date

In this example, the Date.parse() method is used to parse the string "2022-03-15" using the format "yyyy-MM-dd". The resulting date object is stored in the date variable and then printed to the console.

You can adjust the date format pattern according to the format of the date string you are trying to parse.

How to apply custom date patterns in Groovy script?

In Groovy, you can apply custom date patterns using the SimpleDateFormat class. Here's an example of how you can apply a custom date pattern in a Groovy script:

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import java.text.SimpleDateFormat

def date = new Date()
def sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
def formattedDate = sdf.format(date)

println "Formatted date: $formattedDate"

In this example, we first import the SimpleDateFormat class. We then create a new SimpleDateFormat object with a custom date pattern "yyyy-MM-dd HH:mm:ss". Finally, we format the current date using this custom pattern and print the formatted date.

You can change the pattern in SimpleDateFormat constructor to apply different custom date formats as needed.