Interesting call to main method

I was around Wikipedia reading about a programming language called 'D', it is the first time I read about it.

It was curious to me that the syntax looks very similar to Java. But most interesting was when I saw thei开发者_高级运维r main method uses char[][].

I opened up Eclipse and I tried this:

public static void main(char [][] args){
}

I was surprised when I saw it compiled with no syntax errors, but I did not understand why.

Can someone explain to me why this call to the main method can compile in Java?

---

As what you have written is valid Java syntax (static void method with name main and as argument a two dimensional char array) it will compile. The problem however is, that this main method will not work as entry point to a Java program, as this has to have the signature:public static void main(String[] args).

---

dcn, is correct it is a valid method named main. But can't be used to start a Java app.

To expand further, there is some flexibility in the signature:

You can use any variable name, not just args:

public static void main(String[] whateverNameYouWant) {

}

The variable must be an array of Strings, but you can declare that in any valid Java syntax, like so:

public static void main(String args[]) {

}

As, Michael Krussel, points out, you can also use varargs:

public static void main(String... args) {

}