Please help to comment this below Java code and explain how the code works?: public class TextBox $\{$

public String text $=""$; $//$field

public void setText$($String text$)\{$

this.text $=$ text;

$\}$

public void clear$()\{$

text $=""$;

$\}$

$\}$ public class Main $\{$

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

var textBox$1=$ new TextBox$()$;

textBox$1.$setText$("$Box $1")$;

System.out.println$($textBox$1.$text.toUpperCase$())$;

var textBox$2=$ new TextBox$()$;

textBox$2.$setText$("$Box $2")$;

System.out.println$($textBox$2.$text$)$;

$\}$

$\}$