问自定义java包不起作用

EN

import project_euler.Fibonacci;

public class test {
    public static void main(String[] args) {
        Fibonacci fib = new Fibonacci();
        System.out.println(fib.getTerm(10));
    }
}

package project_euler;
public class Fibonacci {
    public int getTerm(int n) {
        if (n < 0 || n > 46) {
            throw new IllegalArgumentException();
        } else {
            return (n > 1) ? getTerm(n-1) + getTerm(n-2) : n;
        }
    }
}

test.java:1: error: package project_euler does not exist
import project_euler.Fibonacci;
                ^
test.java:6: error: cannot access Fibonacci
            Fibonacci fib = new Fibonacci();
            ^
bad source file: C:\Users\dhout_000\Documents\Project Euler\project_euler\Fibonacci.java
file does not contain class Fibonacci
Please remove or make sure it appears in the correct subdirectory of the sourcepath.
2 errors

> My Documents
    > Project Euler
        - test.java
        > project_euler
            - Fibonacci.class
            - Fibonacci.java