Dana Wen

Calculator/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

Calculator/.gitignore

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+/bin/

Calculator/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Calculator</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

Calculator/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.8

Calculator/src/AnotherCalculator.java

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+
+public class AnotherCalculator {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+
+	}
+
+}

Calculator/src/Calculator.java

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+
+public class Calculator {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+
+	}
+
+}

RosterExample/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

RosterExample/.gitignore

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+/bin/

RosterExample/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>RosterExample</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

RosterExample/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.8

RosterExample/src/Employee.java

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+
+public class Employee {
+
+	// Variables
+
+	private static int NEXTID = 100; // Static variable that goes with the class
+
+	private String name;
+	private String jobTitle;
+	private int id;
+
+	/*
+	 * TODO:
+	 * Fields to add:
+	 * boolean isActive - true if the employee is active (i.e. not retired or on leave), false otherwise
+	 * LocalDateTime startDate - the date this employee began employment
+	 */
+
+	// Constructor
+
+	public Employee(String empName, String empJobTitle) {
+		name = empName;
+		jobTitle = empJobTitle;
+		id = NEXTID;
+		NEXTID++; // increment
+	}
+
+	// Methods
+
+	public int getId() {
+		return id;
+	}
+
+	public void setId(int id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getJobTitle() {
+		return jobTitle;
+	}
+
+	public void setJobTitle(String title) {
+		this.jobTitle = title;
+	}
+}

RosterExample/src/Main.java

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+import java.util.List;
+import java.util.Scanner;
+
+public class Main {
+
+	public static void main(String[] args) {
+		Roster myRoster = new Roster();
+		Scanner reader = new Scanner(System.in);
+
+		/*
+		 * User command options:
+		 * add - create a new employee and add them to the roster
+		 * list - print all the employees in the roster
+		 * list [id] - given an employee id, print their info
+		 * quit - exit the program
+		 * 
+		 * TODO:
+		 * delete [id] - given an employee id, remove that employee from the roster
+		 * list [-a] - print all active employees
+		 */
+		boolean quit = false; 
+
+		while(!quit) {
+			System.out.println("Command options: add, list [id], quit");
+			String input = reader.nextLine(); // Read user's input
+			String[] inputParts = input.split(" "); // Split user input into multiple strings
+			String firstCommand = inputParts[0]; // First command typed by user
+			if (firstCommand.equals("add")) {
+				// Prompt user for employee info
+				System.out.println("Please enter employee name");
+				String name = reader.nextLine();
+				System.out.println("Please enter employee title");
+				String title = reader.nextLine();
+
+				Employee emp = new Employee(name, title);
+				myRoster.addEmployee(emp);
+			} else if (firstCommand.equals("list")) {
+				if (inputParts.length == 2) { // User has input "list [i]"
+					int empId = Integer.parseInt(inputParts[1]);
+					printEmployee(myRoster, empId);
+				} else if (inputParts.length == 1) { // User has input "list"
+					printEmployeeList(myRoster);
+				}
+			} else if (firstCommand.equals("quit")) {
+				quit = true;
+			} else {
+				System.out.println("Invalid input, please try again");
+			}
+		}
+		reader.close();
+	}
+
+	// Print the entire employee list
+	private static void printEmployeeList(Roster myRoster) {
+		List<Employee> employeeList = myRoster.getEmployeeList();
+		for (int i = 0; i < employeeList.size(); i++) {
+			Employee currEmp = employeeList.get(i);
+			System.out.println("Id: " + currEmp.getId()
+							+ ", Name: " + currEmp.getName()
+							+ ", Title: " + currEmp.getJobTitle());
+		}
+	}
+
+	// Given the employee id, find them in the list and print their info
+	private static void printEmployee(Roster myRoster, int id) {
+		List<Employee> employeeList = myRoster.getEmployeeList();
+		for (int i = 0; i < employeeList.size(); i++) {
+			Employee currEmp = employeeList.get(i);
+			int currId = currEmp.getId();
+			if (currId == id) {
+				System.out.println("Id: " + currEmp.getId()
+				+ ", Name: " + currEmp.getName()
+				+ ", Title: " + currEmp.getJobTitle());
+			}
+		}
+	}
+
+}

RosterExample/src/Roster.java

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+import java.util.ArrayList;
+import java.util.List;
+
+public class Roster {
+	private List<Employee> employeeList;
+
+	public Roster() {
+		employeeList = new ArrayList<>();
+	}
+
+	public List<Employee> getEmployeeList() {
+		return employeeList;
+	}
+
+	public void setEmployeeList(List<Employee> employees) {
+		employeeList = employees;
+	}
+
+	public void addEmployee(Employee toAdd) {
+		employeeList.add(toAdd);
+	}
+}

SQLiteSample/src/Sample.java

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+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+public class Sample
+{
+	public static void main(String[] args)
+	{
+		Connection connection = null;
+		try
+		{
+			// create a database connection
+			connection = DriverManager.getConnection("jdbc:sqlite:sample.db");
+			Statement statement = connection.createStatement();
+			statement.setQueryTimeout(30);  // set timeout to 30 sec.
+
+			statement.executeUpdate("drop table if exists person");
+			statement.executeUpdate("create table person (id integer, name string)");
+			statement.executeUpdate("insert into person values(1, 'leo')");
+			statement.executeUpdate("insert into person values(2, 'yui')");
+
+			ResultSet rs = statement.executeQuery("select * from person");
+			while(rs.next())
+			{
+				// read the result set
+				System.out.println("name = " + rs.getString("name"));
+				System.out.println("id = " + rs.getInt("id"));
+			}
+		}
+		catch(SQLException e)
+		{
+			// if the error message is "out of memory",
+			// it probably means no database file is found
+			System.err.println(e.getMessage());
+		}
+		finally
+		{
+			try
+			{
+				if(connection != null)
+					connection.close();
+			}
+			catch(SQLException e)
+			{
+				// connection close failed.
+				System.err.println(e.getMessage());
+			}
+		}
+		getUser("leo");
+	}
+
+	public static void getUser(String name) {
+		String sql = "SELECT id, name FROM person where name = ?";
+
+		Connection connection = null;
+		try
+		{
+			connection = DriverManager.getConnection("jdbc:sqlite:sample.db");
+			PreparedStatement pstmt = connection.prepareStatement(sql);
+			pstmt.setString(1, name);
+			pstmt.setQueryTimeout(30);  // set timeout to 30 sec.
+
+			ResultSet rs = pstmt.executeQuery();
+
+			while(rs.next()) {
+				System.out.println(rs.getInt("id") + "\t" +
+						rs.getString("name"));
+			}
+		}
+		catch(SQLException e)
+		{
+			// if the error message is "out of memory",
+			// it probably means no database file is found
+			System.err.println(e.getMessage());
+		}
+		finally
+		{
+			try
+			{
+				if(connection != null)
+					connection.close();
+			}
+			catch(SQLException e)
+			{
+				// connection close failed.
+				System.err.println(e.getMessage());
+			}
+		}
+	}
+}