J250511/01-JavaSE阶段代码/J20250808/localDateTime/Demo03_LocalDateTimeTest.java

package J20250808.localDateTime;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

/**
 * @author WanJl
 * @version 1.0
 * @title Demo03_LocalDateTimeTest
 * @description
 * @create 2025/8/8
 */
public class Demo03_LocalDateTimeTest {
    /**
     *
     */
    public static String dateTimeToString(LocalDateTime localDateTime,String format) {
        DateTimeFormatter df = DateTimeFormatter.ofPattern(format);
        String s = localDateTime.format(df);
        return s;
    }

    public static LocalDateTime stringToDateTime(String s,String format) {
        DateTimeFormatter df = DateTimeFormatter.ofPattern(format);
        LocalDateTime localDateTime = LocalDateTime.parse(s, df);
        return localDateTime;
    }

    public static void main(String[] args) {

        String s = "2025年05月05日 11:13:15";
        String format="yyyy年MM月dd日 HH:mm:ss";

        String timeToString = dateTimeToString(LocalDateTime.now(), format);

        System.out.println(timeToString);

        LocalDateTime dateTime = stringToDateTime(s, format);

        System.out.println(dateTime);
    }
}