Java日期简化工具Joda-Time

Posted 2022-12-04 咩咩文

1.引入依赖包

<dependency>
  <groupId>joda-time</groupId>
  <artifactId>joda-time</artifactId>
  <version>2.9.7</version>
</dependency>

2.测试

import java.util.Calendar;
import java.util.Locale;

import org.joda.time.DateTime;

/**
 * Joda-Time日期库测试demo
 * 
 * @author xiaowen
 *
 */
public class TestDate 
	public static void main(String[] args) 
		final String FMT ="yyyy-MM-dd HH:mm:ss";
		//DateTime
		DateTime dateTime = new DateTime();
		//当前日期
		String currentDateTime = dateTime.toString(FMT);
		System.out.println("当前日期:" + currentDateTime);

		//本年几月
		int monthOfYear = dateTime.getMonthOfYear();
		System.out.println(monthOfYear + "月");

		//本月几号
		int dayOfMonth = dateTime.getDayOfMonth();
		System.out.println(dayOfMonth + "号");

		//明年
		String plusYears = dateTime.plusYears(1).toString(FMT);
		System.out.println(plusYears);
		
		//与jdk交互
		Calendar calendar = dateTime.toCalendar(Locale.CHINESE);
		
		//LocalDate 该类代表没有时区的日期，适用与对时区不关心的日期场景
		LocalDate localDate = new LocalDate();
		System.out.println(localDate);
	
		//LocalTime 该类代表没有时区的时间，适用与对时区不关心的时间场景
		LocalTime localDate = new LocalTime();
		System.out.println(localDate);
        //LocalDateTime 该类代表没有时区的日期时间，适用与对时区不关心的日期时间场景
		LocalDateTime localDateTime = new LocalDateTime();
		System.out.println(localDateTime);