\documentclass[10pt,a4paper]{article}

% Packages
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\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
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\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{sally sung}
\pdfinfo{
  /Title (java-programming.pdf)
  /Creator (Cheatography)
  /Author (sally sung)
  /Subject (Java Programming Cheat Sheet)
}

% Lengths and widths
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% 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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% 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 Programming Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{sally sung} via \textcolor{DarkBackground}{\uline{cheatography.com/216190/cs/47965/}}}
\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}sally sung \\
  \uline{cheatography.com/sally-sung} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 16th April, 2026.\\
   Updated 16th April, 2026.\\
   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}}  \\
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  \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
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\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Inheritance}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{class Animal \{ \newline % Row Count 1 (+ 1)
    void eat() \{ \newline % Row Count 2 (+ 1)
        \seqsplit{System.out.println("eat");} \newline % Row Count 3 (+ 1)
    \} \newline % Row Count 4 (+ 1)
\} \newline % Row Count 5 (+ 1)
class Dog extends Animal \{ \newline % Row Count 6 (+ 1)
    void bark() \{ \newline % Row Count 7 (+ 1)
        \seqsplit{System.out.println("bark");} \newline % Row Count 8 (+ 1)
    \} \newline % Row Count 9 (+ 1)
\}% Row Count 10 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Interface}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{interface Animal \{ \newline % Row Count 1 (+ 1)
    void sound(); \newline % Row Count 2 (+ 1)
\} \newline % Row Count 3 (+ 1)
class Dog implements Animal \{ \newline % Row Count 4 (+ 1)
    public void sound() \{ \newline % Row Count 5 (+ 1)
        \seqsplit{System.out.println("bark");} \newline % Row Count 6 (+ 1)
    \} \newline % Row Count 7 (+ 1)
\}% Row Count 8 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Abstract}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{abstract class Animal \{ \newline % Row Count 1 (+ 1)
    abstract void sound(); \newline % Row Count 2 (+ 1)
    void eat() \{ \newline % Row Count 3 (+ 1)
        \seqsplit{System.out.println("eat");} \newline % Row Count 4 (+ 1)
    \} \newline % Row Count 5 (+ 1)
\} \newline % Row Count 6 (+ 1)
class Dog extends Animal \{ \newline % Row Count 7 (+ 1)
    void sound() \{ \newline % Row Count 8 (+ 1)
        \seqsplit{System.out.println("bark");} \newline % Row Count 9 (+ 1)
    \} \newline % Row Count 10 (+ 1)
\}% Row Count 11 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Exception}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{public class UsedCarException extends Exception \{ \newline % Row Count 1 (+ 1)
    private static final long serialVersionUID = 1L; \newline % Row Count 3 (+ 2)
	public UsedCarException(String message) \{ \newline % Row Count 4 (+ 1)
        super(message); \newline % Row Count 5 (+ 1)
    \} \newline % Row Count 6 (+ 1)
\}% Row Count 7 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Working with Files}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{public class UsedCarApp \{ \newline % Row Count 1 (+ 1)
    public static void writeToFile(ArrayList\textless{}UsedCar\textgreater{} cars, String fileName) \{ \newline % Row Count 3 (+ 2)
        try \{ \newline % Row Count 4 (+ 1)
            PrintWriter writer = new PrintWriter(new FileWriter(fileName)); \newline % Row Count 6 (+ 2)
            for (UsedCar car : cars) \{ \newline % Row Count 7 (+ 1)
                \seqsplit{writer.println(car.toString());} \newline % Row Count 8 (+ 1)
            \} \newline % Row Count 9 (+ 1)
            writer.close(); \newline % Row Count 10 (+ 1)
            System.out.println("\textbackslash{}nSuccessfully saved valid cars to file."); \newline % Row Count 12 (+ 2)
        \} catch (IOException e) \{ \newline % Row Count 13 (+ 1)
            \seqsplit{System.out.println("Error} writing to file: " + e.getMessage()); \newline % Row Count 15 (+ 2)
        \} \newline % Row Count 16 (+ 1)
    \} \newline % Row Count 17 (+ 1)
    public static void readFromFile(String fileName) \{ \newline % Row Count 19 (+ 2)
        try \{ \newline % Row Count 20 (+ 1)
            Scanner fileInput = new Scanner(new File(fileName)); \newline % Row Count 22 (+ 2)
            System.out.println("\textbackslash{}nVIN and Price from file:"); \newline % Row Count 24 (+ 2)
            while \seqsplit{(fileInput.hasNextLine())} \{ \newline % Row Count 25 (+ 1)
                String line = fileInput.nextLine(); \newline % Row Count 27 (+ 2)
                String{[}{]} parts = line.split(","); \newline % Row Count 28 (+ 1)
                if (parts.length == 4) \{ \newline % Row Count 29 (+ 1)
                    String vin = parts{[}0{]}; \newline % Row Count 30 (+ 1)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Working with Files (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{                    String price = parts{[}3{]}; \newline % Row Count 1 (+ 1)
                    System.out.println("VIN: " + vin + " | Price: " + price); \newline % Row Count 3 (+ 2)
                \} \newline % Row Count 4 (+ 1)
            \} \newline % Row Count 5 (+ 1)
            fileInput.close(); \newline % Row Count 6 (+ 1)
        \} catch (FileNotFoundException e) \{ \newline % Row Count 7 (+ 1)
            \seqsplit{System.out.println("Error} reading file: " + e.getMessage()); \newline % Row Count 9 (+ 2)
        \} \newline % Row Count 10 (+ 1)
    \} \newline % Row Count 11 (+ 1)
    public static void main(String{[}{]} args) \{ \newline % Row Count 12 (+ 1)
        Scanner input = new Scanner(System.in); \newline % Row Count 13 (+ 1)
        ArrayList\textless{}UsedCar\textgreater{} validCars = new ArrayList\textless{}\textgreater{}(); \newline % Row Count 15 (+ 2)
        final int NUMBER\_OF\_CARS = 3; \newline % Row Count 16 (+ 1)
        for (int i = 0; i \textless{} NUMBER\_OF\_CARS; i++) \{ \newline % Row Count 18 (+ 2)
            try \{ \newline % Row Count 19 (+ 1)
                System.out.println("\textbackslash{}nEnter information for car \#" + (i + 1)); \newline % Row Count 21 (+ 2)
                System.out.print("Enter VIN (4 digits): "); \newline % Row Count 23 (+ 2)
                String vin = input.nextLine(); \newline % Row Count 24 (+ 1)
                System.out.print("Enter make: "); \newline % Row Count 25 (+ 1)
                String make = input.nextLine(); \newline % Row Count 26 (+ 1)
                System.out.print("Enter year: "); \newline % Row Count 27 (+ 1)
                int year = \seqsplit{Integer.parseInt(input.nextLine());} \newline % Row Count 29 (+ 2)
                System.out.print("Enter price: "); \newline % Row Count 31 (+ 2)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Working with Files (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{                double price = \seqsplit{Double.parseDouble(input.nextLine());} \newline % Row Count 2 (+ 2)
                UsedCar car = new UsedCar(vin, make, year, price); \newline % Row Count 4 (+ 2)
                validCars.add(car); \newline % Row Count 5 (+ 1)
                System.out.println("Car created successfully."); \newline % Row Count 7 (+ 2)
            \} catch (UsedCarException e) \{ \newline % Row Count 8 (+ 1)
                \seqsplit{System.out.println("UsedCarException:} " + e.getMessage()); \newline % Row Count 10 (+ 2)
            \} catch (Exception e) \{ \newline % Row Count 11 (+ 1)
                \seqsplit{System.out.println("Exception:} Invalid input. " + e.getMessage()); \newline % Row Count 13 (+ 2)
            \} \newline % Row Count 14 (+ 1)
        \} \newline % Row Count 15 (+ 1)
        String fileName = "UsedCars.txt"; \newline % Row Count 16 (+ 1)
        writeToFile(validCars, fileName); \newline % Row Count 17 (+ 1)
        readFromFile(fileName); \newline % Row Count 18 (+ 1)
        input.close(); \newline % Row Count 19 (+ 1)
    \} \newline % Row Count 20 (+ 1)
\}% Row Count 21 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{module-info.java \textgreater{} \newline % Row Count 1 (+ 1)
module FinalTermPractice \{ \newline % Row Count 2 (+ 1)
	requires java.sql; \newline % Row Count 3 (+ 1)
\}% Row Count 4 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{import java.sql.*; \newline % Row Count 1 (+ 1)
public class EmployeeDBApp \{ \newline % Row Count 2 (+ 1)
    private static final String DB\_FILE = "EmployeeDB.accdb"; \newline % Row Count 4 (+ 2)
    private static final String DB\_URL = "jdbc:ucanaccess://" + DB\_FILE; \newline % Row Count 6 (+ 2)
    public static Connection getConnection() throws SQLException, ClassNotFoundException \{ \newline % Row Count 8 (+ 2)
        \seqsplit{Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");} \newline % Row Count 10 (+ 2)
        return \seqsplit{DriverManager.getConnection(DB\_URL);} \newline % Row Count 12 (+ 2)
    \} \newline % Row Count 13 (+ 1)
    public static void insertEmployee(Scanner input) \{ \newline % Row Count 15 (+ 2)
        Connection conn = null; \newline % Row Count 16 (+ 1)
        Statement statement = null; \newline % Row Count 17 (+ 1)
        try \{ \newline % Row Count 18 (+ 1)
            conn = getConnection(); \newline % Row Count 19 (+ 1)
            statement = conn.createStatement(); \newline % Row Count 20 (+ 1)
            System.out.print("Enter employee name: "); \newline % Row Count 22 (+ 2)
            String name = input.nextLine(); \newline % Row Count 23 (+ 1)
            System.out.print("Enter employee salary: "); \newline % Row Count 25 (+ 2)
            double salary = \seqsplit{Double.parseDouble(input.nextLine());} \newline % Row Count 27 (+ 2)
            String insertQ = "INSERT INTO Employee (Name, Salary) VALUES ('" \newline % Row Count 29 (+ 2)
                    + name + "', " + salary + ")"; \newline % Row Count 31 (+ 2)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{            \seqsplit{statement.executeUpdate(insertQ);} \newline % Row Count 1 (+ 1)
            \seqsplit{System.out.println("Employee} inserted successfully."); \newline % Row Count 3 (+ 2)
        \} catch (ClassNotFoundException ex) \{ \newline % Row Count 4 (+ 1)
            \seqsplit{System.out.println("Driver} error: " + ex.getMessage()); \newline % Row Count 6 (+ 2)
        \} catch (SQLException ex) \{ \newline % Row Count 7 (+ 1)
            \seqsplit{System.out.println("Database} error: " + ex.getMessage()); \newline % Row Count 9 (+ 2)
        \} catch (Exception ex) \{ \newline % Row Count 10 (+ 1)
            \seqsplit{System.out.println("Input} error: " + ex.getMessage()); \newline % Row Count 12 (+ 2)
        \} finally \{ \newline % Row Count 13 (+ 1)
            try \{ \newline % Row Count 14 (+ 1)
                if (statement != null) \newline % Row Count 15 (+ 1)
                    statement.close(); \newline % Row Count 16 (+ 1)
                if (conn != null) \newline % Row Count 17 (+ 1)
                    conn.close(); \newline % Row Count 18 (+ 1)
            \} catch (SQLException ex) \{ \newline % Row Count 19 (+ 1)
                \seqsplit{System.out.println(ex.getMessage());} \newline % Row Count 21 (+ 2)
            \} \newline % Row Count 22 (+ 1)
        \} \newline % Row Count 23 (+ 1)
    \} \newline % Row Count 24 (+ 1)
    public static void \seqsplit{updateEmployeeSalary(Scanner} input) \{ \newline % Row Count 26 (+ 2)
        Connection conn = null; \newline % Row Count 27 (+ 1)
        Statement statement = null; \newline % Row Count 28 (+ 1)
        try \{ \newline % Row Count 29 (+ 1)
            conn = getConnection(); \newline % Row Count 30 (+ 1)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{            statement = conn.createStatement(); \newline % Row Count 1 (+ 1)
            System.out.print("Enter employee name to update: "); \newline % Row Count 3 (+ 2)
            String name = input.nextLine(); \newline % Row Count 4 (+ 1)
            System.out.print("Enter new salary: "); \newline % Row Count 6 (+ 2)
            double salary = \seqsplit{Double.parseDouble(input.nextLine());} \newline % Row Count 8 (+ 2)
            String updateQ = "UPDATE Employee SET Salary = " + salary \newline % Row Count 10 (+ 2)
                    + " WHERE Name = '" + name + "'"; \newline % Row Count 12 (+ 2)
            int rows = \seqsplit{statement.executeUpdate(updateQ);} \newline % Row Count 14 (+ 2)
            if (rows \textgreater{} 0) \{ \newline % Row Count 15 (+ 1)
                \seqsplit{System.out.println("Salary} updated successfully."); \newline % Row Count 17 (+ 2)
            \} else \{ \newline % Row Count 18 (+ 1)
                \seqsplit{System.out.println("Employee} not found."); \newline % Row Count 20 (+ 2)
            \} \newline % Row Count 21 (+ 1)
        \} catch (ClassNotFoundException ex) \{ \newline % Row Count 22 (+ 1)
            \seqsplit{System.out.println("Driver} error: " + ex.getMessage()); \newline % Row Count 24 (+ 2)
        \} catch (SQLException ex) \{ \newline % Row Count 25 (+ 1)
            \seqsplit{System.out.println("Database} error: " + ex.getMessage()); \newline % Row Count 27 (+ 2)
        \} catch (Exception ex) \{ \newline % Row Count 28 (+ 1)
            \seqsplit{System.out.println("Input} error: " + ex.getMessage()); \newline % Row Count 30 (+ 2)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{        \} finally \{ \newline % Row Count 1 (+ 1)
            try \{ \newline % Row Count 2 (+ 1)
                if (statement != null) \newline % Row Count 3 (+ 1)
                    statement.close(); \newline % Row Count 4 (+ 1)
                if (conn != null) \newline % Row Count 5 (+ 1)
                    conn.close(); \newline % Row Count 6 (+ 1)
            \} catch (SQLException ex) \{ \newline % Row Count 7 (+ 1)
                \seqsplit{System.out.println(ex.getMessage());} \newline % Row Count 9 (+ 2)
            \} \newline % Row Count 10 (+ 1)
        \} \newline % Row Count 11 (+ 1)
    \} \newline % Row Count 12 (+ 1)
    public static void deleteEmployee(Scanner input) \{ \newline % Row Count 14 (+ 2)
        Connection conn = null; \newline % Row Count 15 (+ 1)
        Statement statement = null; \newline % Row Count 16 (+ 1)
        try \{ \newline % Row Count 17 (+ 1)
            conn = getConnection(); \newline % Row Count 18 (+ 1)
            statement = conn.createStatement(); \newline % Row Count 19 (+ 1)
            System.out.print("Enter employee name to delete: "); \newline % Row Count 21 (+ 2)
            String name = input.nextLine(); \newline % Row Count 22 (+ 1)
            String deleteQ = "DELETE FROM Employee WHERE Name = '" + name + "'"; \newline % Row Count 24 (+ 2)
            int rows = \seqsplit{statement.executeUpdate(deleteQ);} \newline % Row Count 26 (+ 2)
            if (rows \textgreater{} 0) \{ \newline % Row Count 27 (+ 1)
                \seqsplit{System.out.println("Employee} deleted successfully."); \newline % Row Count 29 (+ 2)
            \} else \{ \newline % Row Count 30 (+ 1)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{                \seqsplit{System.out.println("Employee} not found."); \newline % Row Count 2 (+ 2)
            \} \newline % Row Count 3 (+ 1)
        \} catch (ClassNotFoundException ex) \{ \newline % Row Count 4 (+ 1)
            \seqsplit{System.out.println("Driver} error: " + ex.getMessage()); \newline % Row Count 6 (+ 2)
        \} catch (SQLException ex) \{ \newline % Row Count 7 (+ 1)
            \seqsplit{System.out.println("Database} error: " + ex.getMessage()); \newline % Row Count 9 (+ 2)
        \} catch (Exception ex) \{ \newline % Row Count 10 (+ 1)
            \seqsplit{System.out.println("Input} error: " + ex.getMessage()); \newline % Row Count 12 (+ 2)
        \} finally \{ \newline % Row Count 13 (+ 1)
            try \{ \newline % Row Count 14 (+ 1)
                if (statement != null) \newline % Row Count 15 (+ 1)
                    statement.close(); \newline % Row Count 16 (+ 1)
                if (conn != null) \newline % Row Count 17 (+ 1)
                    conn.close(); \newline % Row Count 18 (+ 1)
            \} catch (SQLException ex) \{ \newline % Row Count 19 (+ 1)
                \seqsplit{System.out.println(ex.getMessage());} \newline % Row Count 21 (+ 2)
            \} \newline % Row Count 22 (+ 1)
        \} \newline % Row Count 23 (+ 1)
    \} \newline % Row Count 24 (+ 1)
    public static void displayAllEmployees() \{ \newline % Row Count 25 (+ 1)
        Connection conn = null; \newline % Row Count 26 (+ 1)
        Statement statement = null; \newline % Row Count 27 (+ 1)
        ResultSet rs = null; \newline % Row Count 28 (+ 1)
        ArrayList\textless{}Employee\textgreater{} employees = new ArrayList\textless{}Employee\textgreater{}(); \newline % Row Count 30 (+ 2)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{        try \{ \newline % Row Count 1 (+ 1)
            conn = getConnection(); \newline % Row Count 2 (+ 1)
            statement = conn.createStatement(); \newline % Row Count 3 (+ 1)
            String query = "SELECT * FROM Employee"; \newline % Row Count 5 (+ 2)
            rs = \seqsplit{statement.executeQuery(query);} \newline % Row Count 6 (+ 1)
            while (rs.next()) \{ \newline % Row Count 7 (+ 1)
                int id = rs.getInt("ID"); \newline % Row Count 8 (+ 1)
                String name = rs.getString("Name"); \newline % Row Count 10 (+ 2)
                double salary = rs.getDouble("Salary"); \newline % Row Count 12 (+ 2)
                Employee emp = new Employee(id, name, salary); \newline % Row Count 14 (+ 2)
                employees.add(emp); \newline % Row Count 15 (+ 1)
            \} \newline % Row Count 16 (+ 1)
            if (employees.size() == 0) \{ \newline % Row Count 17 (+ 1)
                System.out.println("No employee records found."); \newline % Row Count 19 (+ 2)
            \} else \{ \newline % Row Count 20 (+ 1)
                System.out.println("\textbackslash{}n-{}-{}- All Employees -{}-{}-"); \newline % Row Count 22 (+ 2)
                for (Employee emp : employees) \{ \newline % Row Count 23 (+ 1)
                    System.out.println("ID: " + emp.getId() \newline % Row Count 25 (+ 2)
                            + ", Name: " + emp.getName() \newline % Row Count 27 (+ 2)
                            + ", Salary: " + emp.getSalary()); \newline % Row Count 29 (+ 2)
                \} \newline % Row Count 30 (+ 1)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{            \} \newline % Row Count 1 (+ 1)
        \} catch (ClassNotFoundException ex) \{ \newline % Row Count 2 (+ 1)
            \seqsplit{System.out.println("Driver} error: " + ex.getMessage()); \newline % Row Count 4 (+ 2)
        \} catch (SQLException ex) \{ \newline % Row Count 5 (+ 1)
            \seqsplit{System.out.println("Database} error: " + ex.getMessage()); \newline % Row Count 7 (+ 2)
        \} finally \{ \newline % Row Count 8 (+ 1)
            try \{ \newline % Row Count 9 (+ 1)
                if (rs != null) \newline % Row Count 10 (+ 1)
                    rs.close(); \newline % Row Count 11 (+ 1)
                if (statement != null) \newline % Row Count 12 (+ 1)
                    statement.close(); \newline % Row Count 13 (+ 1)
                if (conn != null) \newline % Row Count 14 (+ 1)
                    conn.close(); \newline % Row Count 15 (+ 1)
            \} catch (SQLException ex) \{ \newline % Row Count 16 (+ 1)
                \seqsplit{System.out.println(ex.getMessage());} \newline % Row Count 18 (+ 2)
            \} \newline % Row Count 19 (+ 1)
        \} \newline % Row Count 20 (+ 1)
    \} \newline % Row Count 21 (+ 1)
    public static void showMenu() \{ \newline % Row Count 22 (+ 1)
        System.out.println("\textbackslash{}n===== Employee Database Menu ====="); \newline % Row Count 24 (+ 2)
        System.out.println("1. Insert Employee"); \newline % Row Count 25 (+ 1)
        System.out.println("2. Update Employee Salary"); \newline % Row Count 27 (+ 2)
        System.out.println("3. Delete Employee"); \newline % Row Count 28 (+ 1)
        System.out.println("4. Display All Employees"); \newline % Row Count 30 (+ 2)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{        System.out.println("5. Exit"); \newline % Row Count 1 (+ 1)
        System.out.print("Enter your choice: "); \newline % Row Count 2 (+ 1)
    \} \newline % Row Count 3 (+ 1)
    public static void main(String{[}{]} args) \{ \newline % Row Count 4 (+ 1)
        Scanner input = new Scanner(System.in); \newline % Row Count 5 (+ 1)
        int choice = 0; \newline % Row Count 6 (+ 1)
        do \{ \newline % Row Count 7 (+ 1)
            showMenu(); \newline % Row Count 8 (+ 1)
            try \{ \newline % Row Count 9 (+ 1)
                choice = \seqsplit{Integer.parseInt(input.nextLine());} \newline % Row Count 11 (+ 2)
                switch (choice) \{ \newline % Row Count 12 (+ 1)
                    case 1: \newline % Row Count 13 (+ 1)
                        insertEmployee(input); \newline % Row Count 14 (+ 1)
                        break; \newline % Row Count 15 (+ 1)
                    case 2: \newline % Row Count 16 (+ 1)
                        \seqsplit{updateEmployeeSalary(input);} \newline % Row Count 18 (+ 2)
                        break; \newline % Row Count 19 (+ 1)
                    case 3: \newline % Row Count 20 (+ 1)
                        deleteEmployee(input); \newline % Row Count 21 (+ 1)
                        break; \newline % Row Count 22 (+ 1)
                    case 4: \newline % Row Count 23 (+ 1)
                        displayAllEmployees(); \newline % Row Count 24 (+ 1)
                        break; \newline % Row Count 25 (+ 1)
                    case 5: \newline % Row Count 26 (+ 1)
                        \seqsplit{System.out.println("Program} terminated."); \newline % Row Count 28 (+ 2)
                        break; \newline % Row Count 29 (+ 1)
                    default: \newline % Row Count 30 (+ 1)
} \tn 
\end{tabularx}
\par\addvspace{1.3em}

\vfill
\columnbreak
\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{JDBC (cont)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{                        \seqsplit{System.out.println("Invalid} choice. Please enter a number from 1 to 5."); \newline % Row Count 2 (+ 2)
                \} \newline % Row Count 3 (+ 1)
            \} catch (Exception ex) \{ \newline % Row Count 4 (+ 1)
                \seqsplit{System.out.println("Invalid} input. Please enter a valid number."); \newline % Row Count 6 (+ 2)
            \} \newline % Row Count 7 (+ 1)
        \} while (choice != 5); \newline % Row Count 8 (+ 1)
        input.close(); \newline % Row Count 9 (+ 1)
    \} \newline % Row Count 10 (+ 1)
\}% Row Count 11 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}