Java8 本地日期时间示例—

import java.time.LocalDate;
import java.time.LocalTime;
import java.time.LocalDateTime;
import java.time.Month;

public class Java8Tester {

public static void main(String args[]) {
      Java8Tester java8tester = new Java8Tester();
      java8tester.testLocalDateTime();
   }
	
   public void testLocalDateTime() {
      // 获取当前日期和时间
      LocalDateTime currentTime = LocalDateTime.now();
      System.out.println("Current DateTime: " + currentTime);
		
      LocalDate date1 = currentTime.toLocalDate();
      System.out.println("date1: " + date1);
		
      Month month = currentTime.getMonth();
      int day = currentTime.getDayOfMonth();
      int seconds = currentTime.getSecond();
		
      System.out.println("Month: " + month +"day: " + day +"seconds: " + seconds);
		
      LocalDateTime date2 = currentTime.withDayOfMonth(10).withYear(2012);
      System.out.println("date2: " + date2);
		
      //12 december 2021
      LocalDate date3 = LocalDate.of(2021, Month.DECEMBER, 12);
      System.out.println("date3: " + date3);
		
      //22 hour 15 minutes
      LocalTime date4 = LocalTime.of(22, 15);
      System.out.println("date4: " + date4);
		
      //解析字符串
      LocalTime date5 = LocalTime.parse("20:15:30");
      System.out.println("date5: " + date5);
   }
}

运行结果 :