\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{bigocb}
\pdfinfo{
  /Title (coding-general.pdf)
  /Creator (Cheatography)
  /Author (bigocb)
  /Subject (Coding (General) Cheat Sheet)
}

% Lengths and widths
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\addtolength{\voffset}{-2cm}
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\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}{3944A3}
\definecolor{LightBackground}{HTML}{F2F3F9}
\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{Coding (General) Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{bigocb} via \textcolor{DarkBackground}{\uline{cheatography.com/97523/cs/20904/}}}
\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}bigocb \\
  \uline{cheatography.com/bigocb} \\
  \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 25th October, 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}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Making API Call}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{public int getNews() \{ \newline  \newline      @Value( "\$\{api.url\}" ) \newline       private String uri; \newline  \newline      @Value( "\$\{api.key\}" ) \newline       private String key; \newline  \newline     ObjectMapper mapper = new ObjectMapper(); \newline     RestTemplate restTemplate = new RestTemplate(); \newline  \newline     List\textless{}Articles\textgreater{} result = \seqsplit{restTemplate.getForObject(uri} + key,  \newline    \seqsplit{InboundNewsResponse.class).getArticles();} \newline  \newline     return 1 \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}{Rest Template}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{@Bean \newline public int \seqsplit{getRest(RestTemplateBuilder} restTemplateBuilder) \{ \newline         String baseUrl = \textless{}URL\textgreater{} \newline         RestTemplate restTemplate = restTemplateBuilder \newline                 \seqsplit{.setConnectTimeout(ncoaConnectTimeout)} \newline                 \seqsplit{.setReadTimeout(ncoaReadTimeout)} \newline                 .build(); \newline  \newline         return new NCOAClient(baseUrl, restTemplate); \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}{Misc.}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{Random Number}} \newline public static double getRandomNumber()\{ \newline     double x = Math.random(); \newline     return x; \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}{Recieving API Call}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{Basic Get}} \newline @GetMapping(path = "/enp" \newline protected boolean get() \{ \newline       return true; \newline \} \newline  \newline {\bf{Info From Request Body}} \newline (@RequestBody String blah) \newline  \newline {\bf{Info From Request Header}} \newline (@RequestHeader ("dp-token") String dpToken) \newline  \newline {\bf{Receive File}} \newline @RequestMapping(value = "/upload", method = RequestMethod.POST,  \newline  consumes = \seqsplit{MediaType.MULTIPART\_FORM\_DATA\_VALUE)} \newline     \newline public String \seqsplit{fileUpload(@RequestParam("file")} MultipartFile file) throws IOException \{ \newline       File convertFile = new \seqsplit{File("/var/tmp/"+file.getOriginalFilename());} \newline       \seqsplit{convertFile.createNewFile();} \newline       FileOutputStream fout = new \seqsplit{FileOutputStream(convertFile);} \newline       \seqsplit{fout.write(file.getBytes());} \newline       fout.close(); \newline       return "File is upload successfully"; \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}{General}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{toString}} \newline @Override \newline public String toString() \{ \newline   return "MailFwdRequest\{" + \newline      "cfpsid='" + cfpsId +  \newline      ", btid=" + btId + \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}{Read file}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{import java.io.*;  \newline public class ReadingFromFile  \newline \{  \newline   public static void main(String{[}{]} args) throws Exception  \newline   \{  \newline     // pass the path to the file as a parameter  \newline     FileReader fr =  \newline       new FileReader("C:\textbackslash{}\textbackslash{}Users\textbackslash{}\textbackslash{}pankaj\textbackslash{}\textbackslash{}Desktop\textbackslash{}\textbackslash{}test.txt");  \newline    \newline     int i;  \newline     while ((i=fr.read()) != -1)  \newline       System.out.print((char) i);  \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}{Run Method on Start}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{@PostConstruct \newline     private void init() \{ \newline         \seqsplit{log.info("InitDemoApplication} initialization logic ..."); \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}{Lists, Maps, Trees}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{Trees}} \newline \{\{link="https://www.baeldung.com/java-binary-tree"\}\}Trees Article\{\{/link\}\} \newline  \newline {\bf{Maps}} \newline HashMap\textless{}String, Integer\textgreater{} map  = new HashMap\textless{}\textgreater{}();  \newline map.put("vishal", 10);  \newline map.get("vishal");  \newline  \newline {\bf{Lists}} \newline List a = new ArrayList(); \newline List b = new LinkedList(); \newline List c = new Vector();  \newline List d = new Stack();  \newline List\textless{}Integer\textgreater{} l1 = new ArrayList\textless{}Integer\textgreater{}();  \newline l1.add(0, 1);  // adds 1 at 0 index  \newline l1.add(1, 2);  // adds 2 at 1 index} \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}{Jooq}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{private final DSLContext jooq; \newline      \newline @Transactional \newline public boolean selectExists(Long \textless{}var) \{ \newline    return jooq.fetchExists( \newline         select() \newline          \seqsplit{.from(COA\_INFORMED\_DELIVERY)} \newline          .where(\textless{}table\textgreater{}.\textless{}column\textgreater{}.eq(\textless{}var\textgreater{})) \newline       ); \newline \} \newline  \newline @Transactional(readOnly = true) \newline public List\textless{}MailFwdExtension\textgreater{} select(String cfpsId) \{ \newline     List\textless{}MailFwdExtensionsRecord\textgreater{} records = jooq \newline          \seqsplit{.selectFrom(MAIL\_FWD\_EXTENSIONS)} \newline          \seqsplit{.where(MAIL\_FWD\_EXTENSIONS.CFPSID.eq(cfpsId))} \newline          \seqsplit{.fetchInto(MailFwdExtensionsRecord.class);} \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}{OAuth / Auth}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{} \tn 
% Row Count 0 (+ 0)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{h2}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{\seqsplit{spring.datasource.url=jdbc:h2:mem:testdb} \newline spring.datasource.driverClassName=org.h2.Driver \newline spring.datasource.username=sa \newline spring.datasource.password= \newline spring.h2.console.enabled=false \newline  \newline spring.h2.console.enabled=true \newline http://localhost:8080/h2-console \newline  \newline @Entity \newline public class Person \{ \newline  \newline     @Id \newline     @GeneratedValue \newline     private int id; \newline     private String name; \newline     private int age; \newline     private String emailId; \newline  \newline     //getters and setters \newline \} \newline  \newline public interface PersonRepository extends CrudRepository\textless{}Person, Integer\textgreater{} \{\} \newline  \newline @Service \newline public class PersonService \{ \newline  \newline     @Autowired \newline     PersonRepository personRepository; \newline  \newline     public List\textless{}Person\textgreater{} getAllPersons() \{ \newline         List\textless{}Person\textgreater{} persons = new ArrayList\textless{}Person\textgreater{}(); \newline         \seqsplit{personRepository.findAll().forEach(person} -\textgreater{} persons.add(person)); \newline         return persons; \newline     \} \newline  \newline     public Person getPersonById(int id) \{ \newline         return \seqsplit{personRepository.findById(id).get();} \newline     \} \newline  \newline     public void saveOrUpdate(Person person) \{ \newline         \seqsplit{personRepository.save(person);} \newline     \} \newline  \newline     public void delete(int id) \{ \newline         \seqsplit{personRepository.deleteById(id);} \newline     \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}