public
/
java-projects
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

add calendar assignment from WCC CS 141 Winter 2019.

This commit is contained in:
Matthew Jensen 2019-12-13 13:52:23 -08:00
commit 9e458e8709
5 changed files with 539 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
.gitignore vendored Normal file
View File

@ -0,0 +1,24 @@
# Compiled class file
*.class
# Log file
*.log
# BlueJ files
*.ctxt
# Mobile Tools for Java (J2ME)
.mtj.tmp/
# Package Files #
*.jar
*.war
*.nar
*.ear
*.zip
*.tar.gz
*.rar
# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
hs_err_pid*

10
README.md Normal file
View File

@ -0,0 +1,10 @@
# Topics:
File I/o (input / output), Arrays
## Learning Outcomes:
- Practice Reading in files to java and processing file text content
- Become comfortable with using arrays to store and retrieve data
- Design and develop programs in accepted style
- Develop further the ability to enhance a program to increase functionality
- Execute the proper steps to write out desired content to a file

495
calendar/Assignment3.java Normal file
View File

@ -0,0 +1,495 @@
/**
*
* Matt Jensen
* 3/20/19
*
* Draws a basic calendar to the console.
* Calendar is scalable with a class constant.
* = and | characters are used for the boundary of the calendar.
*
*/
import java.util.*; // uses scanner
import java.io.*; // uses file
public class Assignment3 {
public static final String[][] EVENTS = new String[12][];
public static final String[] OPTIONS = {"e", "t", "n", "p", "q", "ev", "fp"};
public static final String[] OPTION_DESC = {
"to enter a date and display the corresponding calendar",
"to get todays date and display the today's calendar",
"to display the next month",
"to display the previous month",
"to quit the program",
"event mode",
"file print mode",
};
/**
*
* The width of a single cell of the calendar.
*
*/
public static final int CELL_WIDTH = 10;
/**
*
* Prompts user for a date input on the console.
* Parses input of the form "mm/dd".
* Displays month in the top of output.
* Displays mm and dd separately at the bottom.
* Displays the month associated with input.
* Displays current month in same format below.
*
*/
public static void main(String [] args) {
Scanner console = new Scanner(System.in);
int month, day = 1;
int currentYear, newYear = 0;
Calendar date = Calendar.getInstance();
setEventYear(date.get(Calendar.YEAR));
currentYear = date.get(Calendar.YEAR);
String option = promptForOption(console);
while( ! option.equals("q") ) {
//"to enter a date and display the corresponding calendar",
//"to display the previous month",
if( option.equals("ev") ) {
String eventLine = promptForEvent(console);
addEvent(eventFromLine(eventLine));
}
else if(option.equals("fp") ) {
File file = promptForFile(console);
try{
PrintStream out = new PrintStream(file);
String dateLine = promptForDateLine(console);
month = monthFromLine(dateLine);
day = dayFromLine(dateLine);
date.set(Calendar.getInstance().get(Calendar.YEAR), month, day);
drawCalendar(date, out); // draw the month
out.close();
}
catch(FileNotFoundException error) {
continue;
}
}
else {
if(option.equals("e") ) {
String dateLine = promptForDateLine(console);
// input
month = monthFromLine(dateLine);
day = dayFromLine(dateLine);
date.set(Calendar.getInstance().get(Calendar.YEAR), month, day);
}
//"to get todays date and display the today's calendar",
if( option.equals("t") ) {
// current
date = Calendar.getInstance();
}
//"to display the next month",
if( option.equals("n") ) {
date.add(Calendar.MONTH, 1);
}
//"to display the previous month",
if(option.equals("p") ) {
date.add(Calendar.MONTH, -1);
}
newYear = date.get(Calendar.YEAR);
if(newYear != currentYear) {
setEventYear(newYear);
}
drawCalendar(date, System.out); // draw the month
}
option = promptForOption(console);
}
}
// read in a file of events if they exists
public static void loadEventsFile() {
File eventFile = new File("calendarEvents.txt");
if( ! eventFile.exists()) {
return;
}
try {
Scanner fileScanner = new Scanner(eventFile);
while( fileScanner.hasNextLine() ) {
String eventLine = fileScanner.nextLine();
addEvent(eventFromLine(eventLine));
}
}
catch(FileNotFoundException notFound){
return;
}
}
// prompt loop for file name of file to print to
public static File promptForFile(Scanner console){
System.out.println("What filename? (example.txt)");
System.out.println();
String input = console.next();
File file = new File(input);
return file;
}
// prompt loop for a (mm/dd) date input
public static String promptForDateLine(Scanner console){
System.out.println("What date would you like displayed? (mm/dd)");
System.out.println();
String input = console.next();
while( ! validDateInput(input) ) {
System.out.println("Try again.");
System.out.println("What date would you like displayed? (mm/dd)");
input = console.next();
}
return input;
}
// event name of given calendar date
public static String getEventForDate(Calendar date) {
int month = date.get(Calendar.MONTH);
int day = date.get(Calendar.DAY_OF_MONTH) - 1;
String eventName = EVENTS[month][day];
if(eventName == null) {
return "";
}
return eventName;
}
/**
*
* extract an event name from line
*
* @param eventLine mm/dd event_name parsing.
* @return month day substring of the given date.
*
*/
public static String[] eventFromLine(String line) {
Scanner scanner = new Scanner(line);
String month = Integer.toString(monthFromLine(line));
String day = Integer.toString(dayFromLine(line));
String rawDate = scanner.next();
String name = scanner.next();
String[] event = {month, day, name};
return event;
}
// add event name to multi dem. class array of events
public static void addEvent(String[] event) {
int month = Integer.parseInt(event[0]);
int day = Integer.parseInt(event[1]) - 1;
String name = event[2];
EVENTS[month][day] = name;
}
// is the event line valid?
public static boolean validEventInput(String input) {
if( ! validDateInput(input) ) {
System.out.println("Error: Bad date.");
return false;
}
Scanner scanner = new Scanner(input);
String rawDate = scanner.next();
if( ! scanner.hasNext() ) {
System.out.println("Error: No event.");
return false;
}
return true;
}
// regenerate EVENTS with new day quantities.
// reloads events file automatically.
public static void setEventYear(int year){
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, 1);
cal.set(Calendar.DAY_OF_MONTH, 1);
String[][] clone = EVENTS.clone();
//TODO: copy events to new year
for(int i = 0; i < 12; i++) {
EVENTS[i] = new String[cal.getMaximum(Calendar.DAY_OF_MONTH)];
}
loadEventsFile();
}
// prompt loop for events
public static String promptForEvent(Scanner console) {
System.out.println("Please type an event (mm/dd event_name)");
System.out.println();
String input = console.next() + " " + console.next();
while( ! validEventInput(input) ) {
System.out.println("Try again.");
System.out.println("Please type an event (mm/dd event_name)");
input = console.next() + " " + console.next();
}
return input;
}
// prompt loop for options
public static String promptForOption(Scanner console) {
System.out.println("Please type a command");
printOptions();
String input = console.next();
while( ! validInput(input) ) {
System.out.println("Please enter a valid command");
System.out.println("Please type a command");
printOptions();
input = console.next();
System.out.println();
}
return input.toLowerCase();
}
// valid date line input?
public static boolean validDateInput(String input) {
Scanner scanner = new Scanner(input);
if( ! scanner.hasNext() ) {
System.out.println("Error: No Date Detected");
return false;
}
String rawDate = scanner.next();
scanner = new Scanner(rawDate.replace('/', ' '));
if( ! scanner.hasNextInt() ) {
System.out.println("Error: No Month");
return false;
}
int month = scanner.nextInt();
if( ! scanner.hasNextInt() ) {
System.out.println("Error: No Day");
return false;
}
int day = scanner.nextInt();
if(month > 12 || month < 1 || day < 1 || day > 31) {
System.out.println("Error: Date out of bounds");
return false;
}
return true;
}
// prints the available options array
public static void printOptions() {
for(int i = 0; i < OPTIONS.length; i++) {
System.out.println("\"" + OPTIONS[i] + "\" " + OPTION_DESC[i]);
}
}
// valid option input?
public static boolean validInput(String input) {
String option = input.toLowerCase();
String regex = "(" + String.join("|", OPTIONS) + ").*";
//System.out.println(regex);
if( option.matches(regex) ) {
return true;
}
return false;
}
/**
*
* draws a given month
*
* @param date which date
* @param out where to print
* @return void
*
*/
public static void drawCalendar(Calendar date, PrintStream out) {
out.println();
out.printf("Month: %-" + (calendarWidth() - 8) + "s\n", date.get(Calendar.MONTH) + 1);
// rows
drawDivider('=', out);
drawHeader(out);
drawDivider('=', out);
Calendar firstDay = (Calendar) date.clone();
firstDay.set(Calendar.WEEK_OF_MONTH, 1);
firstDay.set(Calendar.DAY_OF_WEEK, 1);
for(int weekNumber = 0; weekNumber < date.getActualMaximum(Calendar.WEEK_OF_MONTH); weekNumber++) {
drawWeekStartingOn(firstDay, date, out);
drawDivider('-', out);
firstDay.add(Calendar.DAY_OF_MONTH, 7);
}
out.println();
int month = date.get(Calendar.MONTH);
int day = date.get(Calendar.DAY_OF_MONTH);
drawDate(month, day, out); // display date
}
// calculated the total width of the calendar.
public static int calendarWidth() {
int totalWidth = CELL_WIDTH * 7;
return totalWidth;
}
/**
*
* draws a single row of the calenday to console.
*
* @param row the row number to print.
* @return void
*
*/
public static void drawWeekStartingOn(Calendar firstDayOfWeek, Calendar date, PrintStream out) {
Calendar currentDate = (Calendar) firstDayOfWeek.clone();
Calendar lastDayOfWeek = (Calendar) firstDayOfWeek.clone();
lastDayOfWeek.add(Calendar.DAY_OF_MONTH, 6);
while(! currentDate.after(lastDayOfWeek)) {
int day = currentDate.get(Calendar.DAY_OF_MONTH);
String content = "";
if( currentDate.get(Calendar.MONTH) == date.get(Calendar.MONTH)) { // valid dates only
if(currentDate.equals(date)) {
content += "*";
}
content += day;
}
out.print("|");
out.printf("%" + (CELL_WIDTH - 1) + "s", content);
currentDate.add(Calendar.DAY_OF_MONTH, 1);
}
out.println("|");
for(int i = 0; i < CELL_WIDTH / 2; i++) {
currentDate = (Calendar) firstDayOfWeek.clone();
while(! currentDate.after(lastDayOfWeek)) {
String content = "";
if(i == 0) {
String eventName = getEventForDate(currentDate);
content += eventName;
if (content.length() > CELL_WIDTH) {
content = content.substring(0, CELL_WIDTH - 4) + "...";
}
}
out.print("|");
out.printf("%" + (CELL_WIDTH - 1) + "s", content);
currentDate.add(Calendar.DAY_OF_MONTH, 1);
}
out.println("|");
}
}
// draws divider with given char
public static void drawDivider(char character, PrintStream out) {
out.print(' ');
for(int i = 0; i < calendarWidth() - 1; i++) {
out.print(character);
}
out.println();
}
// draws day names
public static void drawHeader(PrintStream out) {
String[] strDays = new String[] { "Su", "Mo", "Tu", "We", "Th", "Fr", "Sa" };
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
while(cal.get(Calendar.DAY_OF_WEEK) < 7) {
out.printf("| %-" + (CELL_WIDTH - 2) + "s", strDays[cal.get(Calendar.DAY_OF_WEEK) - 1 ]);
cal.add(Calendar.DAY_OF_WEEK, 1);
}
out.printf("| %-" + (CELL_WIDTH - 2) + "s|\n", strDays[cal.get(Calendar.DAY_OF_WEEK) - 1 ]);
}
/**
*
* prints the month and date on two separate lines.
*
* @param month month for printing.
* @param day day for printing.
* @return void
*
*/
public static void drawDate(int month, int day, PrintStream out) {
out.printf("Month: %" + CELL_WIDTH +"s\n", month + 1);
out.printf("Day: %" + CELL_WIDTH +"s\n", day);
}
/**
*
* extract an integer value for the month from a given string.
*
* @param date date string of the form mm/dd.
* @return month month substring of the given date.
*
*/
public static int monthFromLine(String line) {
Scanner scanner = new Scanner(line.replace('/', ' '));
int month = scanner.nextInt();
return month - 1;
}
/**
*
* extract an integer value for the day from a given string.
*
* @param date date string of the form mm/dd.
* @return month day substring of the given date.
*
*/
public static int dayFromLine(String line) {
Scanner scanner = new Scanner(line.replace('/', ' '));
int month = scanner.nextInt();
int day = scanner.nextInt();
return day;
}
/**
*
* draws ASCII art preamble of the calendar
*
* @return void
*
*/
public static void drawArt() {
int calHeight = 7 * CELL_WIDTH;
//top
printChar('_', calHeight);
//sun
System.out.println();
System.out.print(" ");
printChar('_', calHeight/4);
System.out.println(" ");
for(int i = 0; i < calHeight/10; i++) {
System.out.print("|");
printChar(' ', calHeight/4);
System.out.println("|");
}
System.out.print("|");
printChar('_', calHeight/4);
System.out.println("|");
//beam
System.out.println();
for(int line = 0; line < calHeight/ 3; line++) {
printChar(' ', line / 2);
System.out.print("\\");
printChar('\\', line / 2);
printChar(' ', line / 2);
System.out.println();
}
//windows
printChar('_', calHeight);
System.out.println();
System.out.println();
//banner
//wheels
}
public static void printChar(char character, int count) {
for(int i = 0; i < count; i++) {
System.out.print(character);
}
}
}

10
calendar/calendarEvents.txt Normal file
View File

@ -0,0 +1,10 @@
01/01 New_Year's_Day
01/15 Martin_Luther_King,_Jr._Day
02/19 President's_Day
05/28 Memorial_Day
07/04 Independence_Day
09/03 Labor_Day
10/08 Columbus_Day
11/12 Veterans_Day
11/22 Thanksgiving_Day
12/25 Christmas_Day

BIN
calendar/specification.pdf Normal file
View File

Binary file not shown.