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docs: expand command line arguments chapter and add project (#240) #262

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16 changes: 4 additions & 12 deletions src/command_line_arguments.md
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<img src="/command_line_arguments/header.png" height="200px"/>

When you run a program like so
When you run a Java program from a terminal, you often want to pass configuration values, file paths, or modes of operation without prompting the user while the program is running.

```
java src/Main.java
```
You run a Java file like so:

Anything you put to the right of `src/Main.java` will be available to your program as a
"command line argument."[^name]

```
java src/Main.java example
```

[^name]: They come from the command line and they are arguments to your program.
```bash
java src/Main.java