\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{marb}
\pdfinfo{
  /Title (java-8.pdf)
  /Creator (Cheatography)
  /Author (marb)
  /Subject (Java 8 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}{00EBB3}
\definecolor{LightBackground}{HTML}{EFFDFA}
\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 8 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{marb} via \textcolor{DarkBackground}{\uline{cheatography.com/32786/cs/10154/}}}
\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}marb \\
  \uline{cheatography.com/marb} \\
  \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 9th December, 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*}{2}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Lambdas}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{`java.util.function`} & Package \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\seqsplit{`@FunctionalInterface`} & Optional. Force a compiler error if the interface has more than one abstract method. \tn 
% Row Count 6 (+ 5)
% Row 2
\SetRowColor{LightBackground}
\{\{nobreak\}\}`(String text) -\textgreater{} System.out.println(text)`\{\{nl\}\}`(text) -\textgreater{} System.out.println(text)`\{\{nl\}\}`System.out::println` & Anonymous function. \tn 
% Row Count 13 (+ 7)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{Default/static method in interface} \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.16 cm} x{5.84 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Stream API - Generatoren}}  \tn
% Row 0
\SetRowColor{LightBackground}
Iterate / Range & Automatische Erzeugung von IntStream durch Iteration \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Builder & Aufbau eines Streams mit Elementen ohne Collection \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Of & Sammlung ovn Objekten als Argument \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
Generate & Supplier Lambda zur Generierung von Eintr{\"a}gen \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Files (NIO), ZipFile, JarFile, Patterns (RegEx)} \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.4 cm} x{5.6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Stream API - Transformation}}  \tn
% Row 0
\SetRowColor{LightBackground}
map( lambda ) & Objekte von Eingabetyp in Ausgabetyp umwandeln \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
flatMap( lambda ) & Collection-Elemente in Stream-Elemente begradigen (Array{[}{]}{[}{]} -\textgreater{} Array{[}{]}) \tn 
% Row Count 5 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.56 cm} x{3.44 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Stream API - Combining / Shortening}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{.filter( p -\textgreater{} p.name.startsWith("M") )} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
.reduce( (x1, x2) -\textgreater{} x1+ x2) & y = ((x1 + x2) + x3) + ... \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{.collect(Collectors.joining("}, ")); & e1 + ", " + e2 + ... \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
.limit(5) & limit number of results \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
.skip(5) & skip elements \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.16 cm} x{5.84 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Stream API - Aggregation}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Those APIs consider the whole set} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{.sorted()} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{.min()/.max()} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\seqsplit{.groupingBy(} & Gruppieren gleicher Elemente \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{.distinct()} & make list unique based on lambda \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{.count()} \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{0.8 cm} p{0.8 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Stream API - Ergebnisse}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{forEach / forEachOrdered} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{toArray(String{[}{]}::new)} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{\seqsplit{collect(Collectors.toList());}} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{\seqsplit{collect(Collectors.toCollection(ArrayList::new));}} \tn 
% Row Count 4 (+ 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}{Stream API}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{List\textless{}Person\textgreater{} persons1, persons2; \newline Stream.of(persons1, persons2)   // stream of lists \newline    .flatMap(ps -\textgreater{} ps.stream())      // stream of obj \newline    .map(p -\textgreater{} p.firstName + " " + p.name) // stream of name \newline    \seqsplit{.forEach(System.out::println);} \newline  \newline IntStream.iterate(0, i -\textgreater{} i + 1) \newline    .limit(10) \newline    \seqsplit{.forEach(System.out::print);} \newline  \newline Stream.builder() \newline    .add("Wir ").add("bauen ").add("einen Satz.").build() \newline    .forEachOrdered(...); \newline  \newline Stream.generate(() -\textgreater{} \seqsplit{Double.valueOf(Math.random()} * 100).intValue()) \newline    .limit(5).forEach(...)} \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}{Java I/O, NIO}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{\seqsplit{Files.lines(Paths.get(this.class.getResource("file.txt").toURI()))} \newline    .count();} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.28 cm} x{6.72 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Date/Time API}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{LocalTime} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{LocalDate} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{LocalDateTime} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{ZonedDateTime.of() / .now(ZoneId.of("CET"));} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{Instant} & Maschinenzeit, genauer, ohne Zeitzone \tn 
% Row Count 6 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{TemporalAdjuster} \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Duration} \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{DateTimeFormatter.ISO\_OFFSET\_DATE\_TIME\{\{nl\}\}// \seqsplit{2011-12-03T10:15:30+01:00}} \tn 
% Row Count 10 (+ 2)
% Row 8
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{\seqsplit{DateTimeFormatter.ofLocalizedDate(FormatStyle}.LONG)\{\{nl\}\}// June 20, 2014; 10:15:58 GMT+1} \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{p{0.8 cm} p{0.8 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Optional}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Optional\textless{}String\textgreater{} result = doSomething();\{\{nl\}\}if ( result.isPresent()) result.get();} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{8.4cm}}{String result = \seqsplit{doSomething().orElse("unknown");}} \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{\seqsplit{doSomething().ifPresent(lambda);}} \tn 
% Row Count 4 (+ 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}{Repeatable Annotation}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{\seqsplit{@Repeatable(TableAnnos.class)} \newline @Retention(RetentionPolicy.RUNTIME) \newline public @interface Table \{ \newline    String value(); \newline \} \newline  \newline @Retention(RetentionPolicy.RUNTIME) \newline public @interface TableAnnos \{ \newline    Table{[}{]} value(); \newline \} \newline  \newline @Table("Customer") \newline @Table("Employee") \newline public class Person \{ \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}