为什么找不到我的文件？ [英] Why can't I find my File?

问题描述

  public static void main（String [] args）{
 String filename =logger.csv; 
文件motor_readings = new File（filename）; 
尝试{
扫描仪inputStream =新的扫描仪（motor_readings）; 
 while（inputStream.hasNext（））{
 System.out.println（inputStream.next（））; 
} 
 inputStream.close（）; 
} catch（FileNotFoundException e）{
 System.out.println（Error：File not Found！）; 
} 
} 
  

然而，这不断给我一个文件不发现错误。

解决方案

如果您现在使用相对路径，文件需要存在于项目根目录中，

考虑这个层次结构：

  project / 
 src / main / java 
 file.java 
 logger.csv 
  

新文件（logger.csv）将无法正常工作。

  project / 
 logger.csv 
 src / main / java 
 file.java 
  / pre> 
 
 
 新文件（logger.csv）将现在工作。 （注意，该文件与src目录相邻。）
 
I'm trying to open a CSV file name "logger.csv" which I have saved in the source folder itself.
public static void main(String[] args) {
    String filename = "logger.csv";
    File motor_readings = new File(filename);
    try {
        Scanner inputStream = new Scanner(motor_readings);
        while (inputStream.hasNext()){
            System.out.println(inputStream.next());
        }
        inputStream.close();
    } catch (FileNotFoundException e) {
        System.out.println("Error: File not found!");
    }
}
However, this keeps on giving me a "File not found" error.
解决方案
If you use relative pathing as you are right now - the file needs to exist in the project root, not in the directory of the java file.

Consider this hierarchy:
project/
  src/main/java
    file.java
    logger.csv
new File("logger.csv") will not work.
project/
  logger.csv
  src/main/java
    file.java
new File("logger.csv") will now work. (notice, the file is adjacent to the src directory.)

                        
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