从目录中读取文件

Question

我正在使用扫描仪类来读取位于我的源文件夹目录中的“maze.txt”，但我遇到了错误。这是我不断收到的错误

Exception in thread "main" java.io.FileNotFoundException: maze.txt (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:146)
at java.util.Scanner.<init>(Scanner.java:656)
at mazetr.ch18ex20.main(ch18ex20.java:144).......:

---

public static void main( String[] args ) throws IOException 
{ 
    Scanner in = new Scanner( new File( "maze.txt" ) ); 
} 

Answer 1

如果你在 mazetr 包上有 maze.txt 你必须介绍：

 Scanner in = new Scanner( new File( "src\\mazetr\\maze.txt" ) ); 

如果你在另一个包上有 maze.txt：

 Scanner in = new Scanner( new File( "src\\anotherpackage\\maze.txt" ) );