TimeCategory

Java wrapper for Groovy's TimeCategory class

Apache Groovy's groovy.time.TimeCategory class makes working with dates a breeze.

  use (TimeCategory) {
    println 1.day.from.now
    println 5.weeks.ago
    println 30.seconds.from.now
    // etc...
  }
  
  java.util.Date myDate;
  use (TimeCategory) { myDate = 15.hours.ago }
  

This tiny library provides a Java wrapper to allow us to make similar calls in Java as we would in the Groovy TimeCategory DSL.

We can get a java.util.Date, a java.time.LocalDate, or a java.time.LocalDateTime.

We can either use chained method calls, or pass in a String which will be interpreted by Groovy. There is no advantage or disadvantage of using one over the other, but both syntaxes are included for developer convenience.

    import java.util.Date;
    import com.dustinredmond.groovytime.TimeCategory;
    
    public class Test {
        
        public static void main(String[] args) {
          Date yesterday = TimeCategory.of(1).day().ago();
          Date tomorrow = TimeCategory.of(1).day().from().today();
          Date nextYear = TimeCategory.of(52).weeks().from().today();
          Date nextWeek = TimeCategory.of(1).week().from().now();

          LocalDate tomorrow = TimeCategory.of("1.day.from.now").getLocalDate();
          LocalDateTime aBitLater = TimeCategory.of("15.minutes.from.now").getLocalDateTime();
        } 
    
    } 

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How to download

The project is on Maven Central. Add the below in your POM.xml file to begin using the library.

<dependency>
    <groupId>com.dustinredmond.groovytime</groupId>
    <artifactId>TimeCategory</artifactId>
    <version>1.0.1</version>
</dependency>