"DATECALC Commons" framework technical principles in the Java class library

"DATECALC Commons" framework technical principles in the Java class library With the continuous progress and demand of software development, time and date calculation is a common demand.In order to simplify the calculation of developers in Java, many excellent frameworks appeared in the Java class library.One of the widely used frameworks is "DATECALC Commons". "DateCalc Commons" is a Java -based open source date computing framework. It provides a series of date computing tools and methods that allow developers to easily handle and operate the date.This article will explore the technical principles of the "DateCalc Commons" framework and provide some Java code examples. 1. Technical principles 1. Date representation: In the "DateCalc Commons" framework, the date of the Java Date is represented by the date.The Date class is a class provided by Java to represent the date and time, which can store the milliseconds since January 1, 1970. 2. Date Calculation: The core of the frame is the date calculation algorithm.It provides a strong set of algorithms that can be added, reduced, and compared on the given date.For example, you can use the addays method in the framework to add or subtract several days to the specified date. The following is an example code calculated using "DateCalc Commons" for date: import net.fortuna.datecalc.DateCalculator; import net.fortuna.datecalc.DateCalculatorFactory; import net.fortuna.datecalc.business.DateCalculatorBuilder; import net.fortuna.datecalc.common.StandardWorkingWeek; import java.util.Calendar; import java.util.Date; public class DateCalcExample { public static void main(String[] args) { // Create a date calculator factory DateCalculatorFactory factory = new DateCalculatorFactory(); // Set up working days StandardWorkingWeek workingWeek = StandardWorkingWeek.getInstance(); factory.setWorkingWeek(workingWeek); // Create a date calculator DateCalculator dateCalculator = factory.newDateCalculator(); // Set the initial date Calendar startDate = Calendar.getInstance(); startDate.set(2022, Calendar.JANUARY, 1); Date start = startDate.getTime(); // Add 30 days on the initial date dateCalculator.add(start); dateCalculator.add(30); // Get the calculated date Date result = dateCalculator.getCurrentBusinessDate(); // Print results System.out.println ("Calculated Date:" + Result); } } This example code demonstrates how to use the "DateCalc Commons" framework for date.First of all, we created a date calculator factory and set up working calendars.Then, we created a date calculator and set up the initial date.Finally, we added 30 days at the initial date and obtained the date after calculation. The above is the technical principle of the "DateCalc Commons" framework and a simple Java code example.With this powerful framework, developers can more easily calculate the date to improve development efficiency.