\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{infinitepos}
\pdfinfo{
  /Title (infinitepos-s-java-cheat-sheet.pdf)
  /Creator (Cheatography)
  /Author (infinitepos)
  /Subject (InfinitePOS's Java Cheat Sheet)
}

% Lengths and widths
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\renewcommand{\footrulewidth}{0pt} % Remove footer line
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\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
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\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
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% Font and Colours
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\definecolor{FootBackground}{HTML}{666666}
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\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{InfinitePOS's Java Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{infinitepos} via \textcolor{DarkBackground}{\uline{cheatography.com/25874/cs/8976/}}}
\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}infinitepos \\
  \uline{cheatography.com/infinitepos} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 9th September, 2016.\\
   Updated 9th September, 2016.\\
   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*}{3}

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\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Data Types}}  \tn
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{(='w')/}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Array : collection of values \newline String : immutable, arranged set of characters \newline Class : Blueprint of the object \newline Java Script : public class Main\{ \newline                          public static void main(string{[}{]} args)\{ \newline                           \} \newline                     \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\mymulticolumn{1}{x{5.377cm}}{byte{[} -128 to 128 {]}{[}-2\textasciicircum{}7 to 2\textasciicircum{}7 -1{]} \newline short{[} -2\textasciicircum{}15 to 2\textasciicircum{}15-1{]} \newline int{[}-2\textasciicircum{}31 to 2\textasciicircum{}31-1{]} \newline long{[}-2\textasciicircum{}63 to 2\textasciicircum{}63-1{]}} \tn 
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Algorithm}}  \tn
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\mymulticolumn{1}{x{5.377cm}}{\seqsplit{An algorithm (pronounced} AL-go-rith-um) is a procedure or formula for solving a problem. \newline Just like you have a recipe to cook food that has step-by-step instructions, in programming you have an algorithm that has step-by-step instructions. \newline Examples: \newline Sorting Algorithm \newline Swap Algorithm \newline Search Algorithm \newline  \newline Simple Algorithm to swap the values of two variables. \newline  \newline Examples: \newline   int a = 4; \newline   int b = 3; \newline   int temp = a; //back up the value of a \newline   a = b; \newline   b = temp; \newline  \newline Simple Algorithm to swap the values of two items in a list. \newline  \newline Examples: \newline  public static void swap(int{[}{]} list, int e1, int e2)\{ \newline         int temp = list{[}e1{]}; \newline         list{[}e1{]} = list{[}e2{]}; \newline         list{[}e2{]} = temp; \newline  \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Decision Making}}  \tn
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\mymulticolumn{1}{x{5.377cm}}{(if/else) \newline  \newline An if statement can be followed by an \seqsplit{optional else statement}, which executes when the Boolean expression is false. \newline  \newline Examples: \newline if(Boolean\_expression 1)\{ \newline    //Executes when the Boolean expression 1 is true \newline \}else if(Boolean\_expression 2)\{ \newline    //Executes when the Boolean expression 2 is true \newline \}else if(Boolean\_expression 3)\{ \newline    //Executes when the Boolean expression 3 is true \newline \}else \{ \newline    //Executes when the none of the above conditions is true. \newline \} \newline  \newline (Switch) \newline  \newline A switch statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each case. \newline  \newline Examples: \newline switch(expression)\{ \newline     case value : \newline        //Statements \newline        break; //optional \newline     case value : \newline        //Statements \newline        break; //optional \newline     //You can have any number of case statements. \newline     default : //Optional \newline        //Statements \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}