\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{Gray00}
\pdfinfo{
  /Title (java-introduttivo.pdf)
  /Creator (Cheatography)
  /Author (Gray00)
  /Subject (Java introduttivo Cheat Sheet)
}

% Lengths and widths
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\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
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\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{E8642C}
\definecolor{LightBackground}{HTML}{FDF5F1}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Java introduttivo Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Gray00} via \textcolor{DarkBackground}{\uline{cheatography.com/146241/cs/31772/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Gray00 \\
  \uline{cheatography.com/gray00} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 20th April, 2022.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{p{1.28 cm} x{6.72 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Tipi primitivi}}  \tn
% Row 0
\SetRowColor{LightBackground}
int & Intero {\emph{(Es: -1, 1, 2, 3..)}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
long & Intero "grande" \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
float & Numero con la virgola "piccolo" \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\seqsplit{double} & Numero con la virgola "grande" \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
bool & Vero o Falso \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
char & Carattere {\emph{(Es: 'a', 'b', ...)}} \tn 
% Row Count 6 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Commenti}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{`// commento su singola riga`\{\{nobreak\}\}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{`/* commento multipla riga */`} \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{For}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{for (int i = 0; i \textless{} n; i++)\{ \newline     // ... \newline     // istruzioni eseguite n volte \newline     // ... \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{While}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{while(condizione == true) \{ \newline     // ... \newline     // istruzioni eseguite fino a quando \newline     // la condizione è soddisfatta \newline     // ... \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Vettori (Array)}}  \tn
% Row 0
\SetRowColor{LightBackground}
`tipo v{[}dim{]};`\{\{nobreak\}\} & crea un vettore di nome "v" di tipo "tipo" con "dim" elementi \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
`tipo v{[}{]} = \{el1, el2, ... \};` \{\{nobreak\}\} & Inizializza un vettore con gli elementi el1, el2 ecc ... \tn 
% Row Count 7 (+ 3)
% Row 2
\SetRowColor{LightBackground}
`v{[}indice{]} = valore;` \{\{nobreak\}\}\{\{bl\}\} & Inserisce "valore" dentro in posizione "indice" \tn 
% Row Count 10 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{- I vettori cominciano ad indice 0 \newline - Es assegnare in {\bf{terza}} posizione: `v{[}2{]} = 10;`}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{1.04 cm} x{6.96 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Condizioni}}  \tn
% Row 0
\SetRowColor{LightBackground}
A == B & Se A è uguale a B, restituisce vero. \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
A != B & Se A è diverso da B, restituisce vero. \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
A \textless{} B & Se A è minore di B, restituisce vero. \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
A \textgreater{} B & Se A è maggiore di B, restituisce vero. \tn 
% Row Count 8 (+ 2)
% Row 4
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A \textless{}= B & Se A è minore o uguale di B, restituisce vero. \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
A \textgreater{}= B & Se A è maggiore o uguale di B, restituisce vero. \tn 
% Row Count 12 (+ 2)
% Row 6
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A ! B & A not B \tn 
% Row Count 13 (+ 1)
% Row 7
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A \&\& B & A and B, vero se entrambe le condizioni sono vere. \tn 
% Row Count 15 (+ 2)
% Row 8
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A || B & A or B, vero se almeno una condizione è vera. \tn 
% Row Count 17 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Le espressioni booleane sono valutate da sinistra a destra!}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}