$17\mathrm{.}4\mathrm{.}10-$ What is wrong in the following code?

import java.io$.*$;

public class Test $\{$

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

try $($

FileInputStream fis $=$ new FileInputStream$("$test$.$dat"$)$; $)\{$

$\}$

catch $($IOException ex$)\{$

ex$.$printStackTrace$()$;

$\}$

catch $($FileNotFoundException ex$)\{$

ex$.$printStackTrace$()$;

$\}$

$\}$

$\}$