In the source launcher the candidate main method is executed in the context of the class/interface/abstract class it is inherited from, rather than in the context of the actual intended main class:
In the following example we should call `new A().main()`, but rather `new B().main()` is called.
Example:

```
// A.java
class A extends B {}
​
// B.java
class B {
    void main() {
        System.out.println(getClass().getName());
    }
}
```

```
$ java A.java
B // expected "A" here
​
$ java B.java
B
```

When using the same example with `javac A.java` and `java A` we get the expected output of "A"

**Additional notes:**
- If B is an abstract class or interface currently we get the following:
`error: abstract class: B can not be instantiated`
- If B is inside a module which is not open to reflection:
Exception in thread "main" `java.lang.reflect.InaccessibleObjectException: Unable to make void b.B.main() accessible: module b does not "opens b" to module jdk.compile`