\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{Plaban Kumar Mondal}
\pdfinfo{
  /Title (java-quick-cheat-sheet.pdf)
  /Creator (Cheatography)
  /Author (Plaban Kumar Mondal)
  /Subject (Java Quick Cheat Sheet)
}

% Lengths and widths
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\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\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}{E3932B}
\definecolor{LightBackground}{HTML}{FDF8F1}
\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 Quick Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Plaban Kumar Mondal} via \textcolor{DarkBackground}{\uline{cheatography.com/208038/cs/44492/}}}
\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}Plaban Kumar Mondal \\
  \uline{cheatography.com/plaban-kumar-mondal} \\
  \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 30th September, 2024.\\
   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}{x{1.216 cm} p{0.836 cm} x{5.548 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{8.4cm}}{\bf\textcolor{white}{Data Types}}  \tn
% Row 0
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\mymulticolumn{3}{x{8.4cm}}{{\bf{Primitive Data Types}}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Type & Size & Range of values \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{boolean} & 1 bit & true, false \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
char & 2 byte & '\textbackslash{}u0000' to '\textbackslash{}uffff' \tn 
% Row Count 6 (+ 2)
% Row 4
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byte & 1 byte & -128 to 127 \tn 
% Row Count 8 (+ 2)
% Row 5
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short & 2 byte & -32,768 to 32,767 \tn 
% Row Count 10 (+ 2)
% Row 6
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int & 4 byte & - 2,147,483,648 to 2,147,483,647 \tn 
% Row Count 12 (+ 2)
% Row 7
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long & 8 byte & -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 \tn 
% Row Count 14 (+ 2)
% Row 8
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float & 4 byte & 32-bit floating point \tn 
% Row Count 16 (+ 2)
% Row 9
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\seqsplit{double} & 8 byte & 64-but floating point \tn 
% Row Count 18 (+ 2)
% Row 10
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\mymulticolumn{3}{x{8.4cm}}{{\bf{Non-Primitive Data Types}}} \tn 
% Row Count 19 (+ 1)
% Row 11
\SetRowColor{white}
\seqsplit{String} &  & It is a sequence of characters \tn 
% Row Count 21 (+ 2)
% Row 12
\SetRowColor{LightBackground}
Class &  & It is a user defined data type from which objects are created \tn 
% Row Count 24 (+ 3)
% Row 13
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\seqsplit{Object} &  & It is an instance of a class representing real-life entities \tn 
% Row Count 27 (+ 3)
% Row 14
\SetRowColor{LightBackground}
\seqsplit{Interface} &  & It is similar to class but contains abstract methods by default \tn 
% Row Count 30 (+ 3)
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{8.4cm}{x{1.216 cm} p{0.836 cm} x{5.548 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{8.4cm}}{\bf\textcolor{white}{Data Types (cont)}}  \tn
% Row 15
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Array &  & It holds elements of similar data types \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Classes and Objects}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{class Dog \{ \newline     String name; \newline     int age; \newline      \newline     public void info() \{ \newline         \seqsplit{System.out.print(this.name} + " is " + this.age + " years old"); \newline     \} \newline \} \newline  \newline  \newline public class Main \{ \newline     public static void main(String{[}{]} args) \{ \newline         // Creating an object from the Dog class \newline         Dog myDog = new Dog(); \newline         // Assigning values \newline         myDog.name = "Tommy"; \newline         myDog.age = 3; \newline         // calling the method \newline         myDog.info(); // output: Tommy is 3 years old \newline     \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Comments}}  \tn
% Row 0
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\mymulticolumn{1}{x{8.4cm}}{{\bf{Single Line Comment}}} \tn 
% Row Count 1 (+ 1)
% Row 1
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\mymulticolumn{1}{x{8.4cm}}{`// this is a single line comment`} \tn 
% Row Count 2 (+ 1)
% Row 2
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\mymulticolumn{1}{x{8.4cm}}{{\bf{Multiline Comment}}} \tn 
% Row Count 3 (+ 1)
% Row 3
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% Row Count 4 (+ 1)
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\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Basic Program Structure}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{public class Main \{ \newline   public static void main(String{[}{]} args) \{ \newline     \seqsplit{System.out.println("Hello} World"); \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}{Primitive Types}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{public class Main \{ \newline     public static void main(String{[}{]} args) \{ \newline         int a = 10; \newline         System.out.println(a); // 10 \newline         double b = 1021.0121; \newline         System.out.println(b); // 1021.0121 \newline         float c = 11.001f; \newline         System.out.println(c); // 11.001 \newline         boolean d = true; \newline         System.out.println(d); // true \newline         char e = 'P'; \newline         System.out.println(e); // P \newline         String f = "Learning Java"; \newline         System.out.println(f); // Learning Java \newline     \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Classes and Object Theory}}  \tn
% Row 0
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\mymulticolumn{1}{x{8.4cm}}{A class in java is a user-defined data type. It is declared with the `class` keyword. It can have properties and methods.} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Here in the example `name` and the `age` is the property and `info()` is the method.} \tn 
% Row Count 5 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}