打印昨天的当前时刻

Java
import java.util.Calendar;

class YesterdayCurrent {
public static void main(String[] args){
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, -1);
System.out.println(cal.getTime());
}
}

在Java 8中，可以用下面的代码实现相同的功能。

Java
import java.time.LocalDateTime;

class YesterdayCurrent {

public static void main(String[] args) {
LocalDateTime today = LocalDateTime.now();
LocalDateTime yesterday = today.minusDays(1);

System.out.println(yesterday);
}
}

Java
2022-07-02T01:29:58.088