Having this file schema:
folder "a"
|
|_____ MyClass.java
Where my ".java" file has this code:
package a;
public class MyClass {
public static void main(String[] args) {
System.out.println("Hello world");
}
}
I was wondering the reason why I get this error (I'm using visual studio, I say it in case it is related to my error):
The declared package "a" does not match the expected package "".
I've noticed that sometimes when I reopen my folder It suddenly works, however other times it doesn't.
I don't know why this happens, I believe the reason it's related to visual studio but it goes further of it, since when I try to compile it, as said, sometimes It works, others don't.
Telling me this error:
Error: Could not find or load main class MyClass
Caused by: java.lang.NoClassDefFoundError: a/MyClass (wrong name: MyClass)
package a;
public class MyClass {
public static void main(String[] args) {
System.out.println("Hello world");
}
}
It depends from where you are referencing the class. If a
is a subfolder and you are trying to compile MyClass.java
from within a
it won't work (unless you specify the correct folder like ./..
or similar. Packages are relative to some root folder or other package.
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