package model3.unit2;

import java.time.LocalDate;

import java.time.LocalDateTime;

import java.time.LocalTime;

public class Java01 {

public static void main(String[] args) {

// (1)日期

LocalDate a = LocalDate.now();

System.out.println(a);

// (2)时间

LocalTime b = LocalTime.now();

System.out.println(b);

// (3)日期时间

LocalDateTime c = LocalDateTime.now();

System.out.println(c);

}

}

package model3.unit2;

import java.time.LocalDate;

import java.time.LocalDateTime;

import java.time.LocalTime;

public class Java02 {

public static void main(String[] args) {

// (1)日期

LocalDate a = LocalDate.of(2016, 4, 15);

System.out.println(a);

// (2)时间

LocalTime b = LocalTime.of(11, 34, 56);

System.out.println(b);

// (3)日期时间

LocalDateTime c = LocalDateTime.of(2018, 8, 8, 10, 10, 10);

System.out.println(c);

}

}

package model3.unit2;

import java.time.LocalDate;

import java.time.LocalDateTime;

import java.time.LocalTime;

public class Java03 {

public static void main(String[] args) {

// 字符串转换为日期类型

// (1)字符串转换日期

// 注意：转换的时候必须保证和日期格式相同

String a = "2023-05-30";

LocalDate b = LocalDate.parse(a);

System.out.println(b);

// (2)字符串转换时间

String c = "14:03:34.429";

LocalTime d = LocalTime.parse(c);

System.out.println(d);

// (3)字符串转换日期时间

// 注意：日期格式 T 时间、否则报错

String e = "2023-05-30T14:01:14";

LocalDateTime f = LocalDateTime.parse(e);

System.out.println(f);

System.out.println(f.toString());

}

}