Add the Correct Data Types!

Modify the given variables $($age$,$ pi$,$ isStudent, grade, state$)$ by assigning appropriate data types.

import java.io$.*$;

import java.util.$*$;

import java.text.$*$;

import java.math.$*$;

import java.util.regex.$*$;

public class CodingQuestion $\{$

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

$//$ Modify code below with the appropriate datatypes:

age $=21$;

pi $=3\mathrm{.}14$;

isStudent $=$ true;

grade $=\text{'}$A$\text{'}$;

state $=$ "California";

$/*****$DO NOT CHANGE THE CODE BELOW THIS LINE$*****/$

checkType$($age$)$;

checkType$($pi$)$;

checkType$($isStudent$)$;

checkType$($grade$)$;

checkType$($state$)$;

$\}$

static void checkType$($Object o$)\{$

if $($o instanceof String$)\{$

System.out.println$("$String$")$;

$\}$ else if $($o instanceof Integer$)\{$

System.out.println$("$int$")$;

$\}$ else if $($o instanceof Double$)\{$

System.out.println$("$double$")$;

$\}$ else if $($o instanceof Character$)\{$

System.out.println$("$char$")$;

$\}$ else if $($o instanceof Boolean$)\{$

System.out.println$("$boolean$")$;

$\}$

$\}$

$\}$