我正在使用日期時(shí)間格式以特定模式打印日期時(shí)間，但我的編譯器拋出錯(cuò)誤。import java.util.Date; import java.time.*;import java.text.SimpleDateFormat; public class fewdays{ public static void main(String[] args){ LocalDate today = LocalDate.now() ; LocalDate then = today.minusDays( 2 ) ; LocalTime time_ago = LocalTime.now(); LocalDateTime dt = LocalDateTime.of(then, time_ago); DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss"); System.out.println(dtf.format(dt)); }}現(xiàn)在編譯器顯示此錯(cuò)誤消息： error: cannot find symbol DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss"); ^ symbol: variable DateTimeFormatter location: class fewdays
3 回答
夢里花落0921
TA貢獻(xiàn)1772條經(jīng)驗(yàn) 獲得超6個(gè)贊
DateTimeFornatter在包裝中java.time.format。
所以你必須添加
import java.time.format.DateTimeFormatter
qq_遁去的一_1
TA貢獻(xiàn)1725條經(jīng)驗(yàn) 獲得超8個(gè)贊
我正在使用日期時(shí)間格式以特定模式打印日期時(shí)間，但我的編譯器拋出錯(cuò)誤。
import java.util.Date;
import java.time.*;
import java.text.SimpleDateFormat;
public class fewdays{
public static void main(String[] args){
LocalDate today = LocalDate.now() ;
LocalDate then = today.minusDays( 2 ) ;
LocalTime time_ago = LocalTime.now();
LocalDateTime dt = LocalDateTime.of(then, time_ago);
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
System.out.println(dtf.format(dt));
}
}
現(xiàn)在編譯器顯示此錯(cuò)誤消息：
error: cannot find symbol
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
^
symbol: variable DateTimeFormatter
location: class fewdays
添加回答
舉報(bào)
0/150
提交
取消