Question

由于某种原因，我得到一个错误，它找不到符号：class TimeClient

我从oracle.com上的java trail中复制了这段代码这是TimeClient.java：

import java.time.*; 

public interface TimeClient {
    void setTime(int hour, int minute, int second);
    void setDate(int day, int month, int year);
    void setDateAndTime(int day, int month, int year,
    int hour, int minute, int second); LocalDateTime getLocalDateTime();
}

这是SimpleTimeClient.java文件：

package defaultmethods;

import java.time.*;
import java.lang.*;
import java.util.*;

public class SimpleTimeClient implements TimeClient {

    private LocalDateTime dateAndTime;

    public SimpleTimeClient() {
        dateAndTime = LocalDateTime.now();
    }

    public void setTime(int hour, int minute, int second) {
        LocalDate currentDate = LocalDate.from(dateAndTime);
        LocalTime timeToSet = LocalTime.of(hour, minute, second);
        dateAndTime = LocalDateTime.of(currentDate, timeToSet);
    }

    public void setDate(int day, int month, int year) {
        LocalDate dateToSet = LocalDate.of(day, month, year);
        LocalTime currentTime = LocalTime.from(dateAndTime);
        dateAndTime = LocalDateTime.of(dateToSet, currentTime);
    }

    public void setDateAndTime(int day, int month, int year,
          int hour, int minute, int second) {
        LocalDate dateToSet = LocalDate.of(day, month, year);
        LocalTime timeToSet = LocalTime.of(hour, minute, second); 
        dateAndTime = LocalDateTime.of(dateToSet, timeToSet);
    }

    public LocalDateTime getLocalDateTime() {
        return dateAndTime;
    } 

    public String toString() {
        return dateAndTime.toString();
    }

    public static void main(String... args) {
        TimeClient myTimeClient = new SimpleTimeClient();
        System.out.println(myTimeClient.toString());
    }
}

以下是错误：

javac SimpleTimeClient.java
SimpleTimeClient.java:7: error: cannot find symbol
public class SimpleTimeClient implements TimeClient {
                                         ^
  symbol: class TimeClient
SimpleTimeClient.java:43: error: cannot find symbol
        TimeClient myTimeClient = new SimpleTimeClient();
        ^
  symbol:   class TimeClient
  location: class SimpleTimeClient
2 errors

我将文件放在同一目录中，为什么找不到TimeClient.java？这是不是很简单，我错过了？

Answer 1

做Makoto的建议解决了这个问题。该文件不在名为包的目录中（SimpleTimeClient.java）。

Java Trails示例TimeClient错误

1 个答案: