\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{Jianmin Feng (taotao)} \pdfinfo{ /Title (java-8-dates-and-times-oca.pdf) /Creator (Cheatography) /Author (Jianmin Feng (taotao)) /Subject (Java 8 Dates and Times (OCA) Cheat Sheet) } % Lengths and widths \addtolength{\textwidth}{6cm} \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}{41571C} \definecolor{LightBackground}{HTML}{F9F9F7} \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 Dates and Times (OCA) Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{Jianmin Feng (taotao)} via \textcolor{DarkBackground}{\uline{cheatography.com/79308/cs/19235/}}} \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}Jianmin Feng (taotao) \\ \uline{cheatography.com/taotao} \\ \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 May, 2019.\\ 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{1.68 cm} x{6.32 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Java Date Time in Java 8}} \tn % Row 0 \SetRowColor{LightBackground} java 1.0 & \seqsplit{java.util.Date;java.text.Format} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} java 1.2 & java.util.Calendar \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} java 8 & java.time.* \tn % Row Count 3 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}--} \SetRowColor{LightBackground} \mymulticolumn{2}{x{8.4cm}}{java 8 classes: LocalDate, LocalTime, LocalDateTime, Month (1-12), Period, Duration} \tn \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{8.4cm}{x{3.6 cm} x{4.4 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Creating Dates and Times}} \tn % Row 0 \SetRowColor{LightBackground} {\bf{static of()}} & Overriden by LocalData, LocalTime and LocalDateTime \tn % Row Count 3 (+ 3) % Row 1 \SetRowColor{white} LocalDate.of(y,m.d); & m: int or Month(1-12) \tn % Row Count 5 (+ 2) % Row 2 \SetRowColor{LightBackground} LocalTime.of(h,mi,s,ns) & ns: nano second \tn % Row Count 7 (+ 2) % Row 3 \SetRowColor{white} \seqsplit{LocalDateTime.of(y},m,d,h,mi,s,ns) & LocalDateTime.of(d,t) \tn % Row Count 9 (+ 2) % Row 4 \SetRowColor{LightBackground} {\bf{static now()}} & Overriden by LocalData, LocalTime and LocalDateTime \tn % Row Count 12 (+ 3) % Row 5 \SetRowColor{white} {\bf{static parse(s,f)}} & Overriden by LocalData, LocalTime and LocalDateTime \tn % Row Count 15 (+ 3) % Row 6 \SetRowColor{LightBackground} \seqsplit{LocalDateTime.parse(s},f) & f must be DateTimeFormatter \tn % Row Count 17 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}--} \SetRowColor{LightBackground} \mymulticolumn{2}{x{8.4cm}}{LocalDate d= new LocalDate() //not compiled \newline LocalDate d= LocalDate.of(2015,2,30); //not compile} \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}{Manipulating Dates and Times}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{plusXxx(int)} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{minusXxx(int)} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{return new immutable, original not changed, like String} \tn % Row Count 4 (+ 2) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{chain of method on date and time} \tn % Row Count 5 (+ 1) % Row 4 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{getXxx(); //Xxx= DayOfWeek,DayOfYear, Month, Year} \tn % Row Count 6 (+ 1) % Row 5 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{dt1.isBefore(dt2)} \tn % Row Count 7 (+ 1) % Row 6 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{dt1.isAfter(dt2)} \tn % Row Count 8 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{Xxx= Years / Months \seqsplit{/Days/Hours/Minutes/Seconds/Nanos;} \newline Java 8 date \& time are immutable, like String objects.} \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}{Peroid and Duration}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{java.time.Period; Java.time.Duration;} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{{\bf{4 ways to create a period}}} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{Period.ofXxx(int); //Xxx=Years,Months,Days} \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{Period.of(int years,int months, int days);} \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{Period.between (d1,d2)} \tn % Row Count 5 (+ 1) % Row 5 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{\seqsplit{Period.parse("P1Y2M3W4D");//same} as Period.of(1, 2, 25)} \tn % Row Count 7 (+ 2) % Row 6 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{{\bf{Modify period}}} \tn % Row Count 8 (+ 1) % Row 7 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{plusXxx(int); \seqsplit{//Days|Weeks|Months|Years}} \tn % Row Count 9 (+ 1) % Row 8 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{minusXxx(int)} \tn % Row Count 10 (+ 1) % Row 9 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{{\bf{Use period}}} \tn % Row Count 11 (+ 1) % Row 10 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{dt.plus/minnus(period);} \tn % Row Count 12 (+ 1) % Row 11 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{d.plus/minus(period);} \tn % Row Count 13 (+ 1) % Row 12 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{\seqsplit{time.plus/minus(duration);} //if input period, \seqsplit{UnsupportedTemporalTypeException}} \tn % Row Count 15 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{Chain of Periods method does not make sense and raise compiler error} \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}{Formatting}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{{\bf{2 methods to create a formatter}}} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{`DateTimeFormatter \seqsplit{f=DateTimeFormatter.ofXxx`(FormatStyle.SHORT|MEDIUM|LONG|FULL);}} \tn % Row Count 3 (+ 2) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{`DateTimeFormatter \seqsplit{f=DateTimeFormatter.ofPattern`("yyyy-MMMM-dd} hh:mm:ss"); //M 1 MM 01 MMM Jan MMMM January} \tn % Row Count 6 (+ 3) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{{\bf{Standard formatter:}}} \tn % Row Count 7 (+ 1) % Row 4 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{\seqsplit{DateTimeFormatter.ISO\_LOCAL\_DATE/TIME/DATETIME}} \tn % Row Count 8 (+ 1) % Row 5 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{ISO\_LOCAL\_DATETIME: '2011-12-03T10:15:30'} \tn % Row Count 9 (+ 1) % Row 6 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{{\bf{3 ways to use formatter}}} \tn % Row Count 10 (+ 1) % Row 7 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{f.format( date/time/datetime\_obj );} \tn % Row Count 11 (+ 1) % Row 8 \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{\seqsplit{date/time/datetime\_obj.format(} f );} \tn % Row Count 12 (+ 1) % Row 9 \SetRowColor{white} \mymulticolumn{1}{x{8.4cm}}{\seqsplit{LocalDate/Time/DateTime.parse(String} s, DateTimeFormatter f);} \tn % Row Count 14 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{8.4cm}}{1 Xxx = LocalizedDate, LocalizedTime,LocalizedDateTime \newline 2 date and time format legal for datatime object, datatime format not legal for date or time object} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} % That's all folks \end{multicols*} \end{document}