Vala, 42 bytes

Yayyyy!!! 42!!! \o/

File hello.vala:

void main(){stdout.puts("Hello, World!");} 

...without trailing newline.

Run:

$ valac hello.vala $ ./hello Hello, World! 

Vala, 36 bytes

File hello.vala:

void main(){print("Hello, World!");} 

...without trailing newline.

After a diet suggested by @ASCII-only.

Try it online!

Vala, 42 bytes

Yayyyy!!! 42!!! \o/

File hello.vala:

void main(){stdout.puts("Hello, World!");} 

...without trailing newline.

Run:

$ valac hello.vala $ ./hello Hello, World!