What is the problem with this code?

class HelloWorld $\{$

public static void main$($String$[]$ args$)$

$\{$

String this $=$ "Hello World!";

System.out.println$($this$)$;

$\}$

$\}$

$$

There is no issue with the code.

It contains a keyword used as a variable and gives a compile$-$time error.

It proves that I don't like Java.

It contains a keyword used as a variable and gives a run$-$time error.