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Jul 7, 2022
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Embed video about program entry points #2465

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14 changes: 6 additions & 8 deletions _overviews/scala3-book/methods-main-methods.md
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Expand Up @@ -14,23 +14,21 @@ Scala 3 offers a new way to define programs that can be invoked from the command
@main def hello() = println("Hello, world")
```

Just save that line of code in a file named something like *Hello.scala*---the filename doesn’t have to match the method name---and compile it with `scalac`:
Just save that line of code in a file named something like *Hello.scala*---the filename doesn’t have to match the method name---and run it with `scala`:

```bash
$ scalac Hello.scala
```

Then run it with `scala`:

```bash
$ scala hello
$ scala Hello.scala
Hello, world
```

A `@main` annotated method can be written either at the top-level (as shown), or inside a statically accessible object.
In either case, the name of the program is in each case the name of the method, without any object prefixes.

Learn more about the `@main` annotation by reading the following sections, or by watching this video:

<div style="text-align: center">
<iframe width="560" height="315" src="https://www.youtube.com/embed/uVMGPrH5_Uc" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>

### Command line arguments

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