私の Java クラスでは、カレンダー アプリケーションを作成する必要があります。ほぼ完成しましたが、いくつかの方法で助けが必要です。助けが必要な部分をコメントしました。このコードには、3 つのクラスと TestCalendar という名前のメインが含まれています。ヘルプが必要な関数は、removeEvent (そのうちの 2 つは 2 つの異なる引数を取る)、printEvents、および findEvents という名前の Calendar クラスにあります。前もって感謝します！
これが日付クラスです。
public class Date {
int year, month, day;
//constructor
public Date(int yr, int mth, int dy){
year = yr;
if (yr < 2000 || yr > 2100)
{
System.out.println("Wrong Calander Year");
System.exit(1);
}
month = mth;
if (mth < 1 || mth > 12)
{
System.out.println("Wrong Month");
System.exit(1);
}
day = dy;
if (dy < 1 || dy > 31)
{
System.out.println("Wrong Day");
System.exit(1);
}
}
//accessor methods
public int getYear()
{
return year;
}
public int getMonth()
{
return month;
}
public int getDay()
{
return day;
}
//returns date in correct format
public String toString()
{
return "" + month + "/" + day + "/" + year;
}
}
ここにイベントクラスがあります
public class Event {
Date date;
int hour;
String activity;
Event(int year, int month, int day, int hour, String activity)
{
if (year < 2000 || year > 2100)
{
System.out.println("Wrong Calander Year");
System.exit(1);
}
if (month < 1 || month > 12)
{
System.out.println("Wrong Month");
System.exit(1);
}
if (day < 1 || day > 31)
{
System.out.println("Wrong Day");
System.exit(1);
}
this.date = new Date(year, month, day);
this.hour = hour;
this.activity = activity;
}
public Date getDate()
{
return date;
}
public int getHour()
{
return hour;
}
public String getActivity()
{
return activity;
}
void setActivity(String newActivity)
{
this.activity = newActivity;
}
public String toString()
{
return "" + date +" " + "@" + hour +":" + " " + activity;
}
public boolean equals(Object obj)
{
if (obj instanceof Event)
{
return true;
}
else return false;
}
}
カレンダー クラス
public class Calander {
static final int MAXEVENTS = 10;
Event[] events;
int numEvents;
// constructor
public Calander() {
numEvents = 0;
events = new Event[MAXEVENTS];
}
void addEvent(int year, int month, int day, int hour, String activity) {
Event newEvent = new Event(year, month, day, hour, activity);
events[numEvents] = newEvent;
numEvents++;
}
void removeEvent(int year, int month, int day, int hour, String activity) {
{
if (events[numEvents] == null);
numEvents--;
}
}
// instructions say to remove (all) Event objects in the Calendar that are equals to the event argument. Use the equals method from the event class
void removeEvent(Event event) {
//what to put here?
}
// this method needs to print every Event in the associated Calendar that matches the date arguments. Print each on a separate line, using the toString method from the Event class.
void printEvents(int year, int month, int day) { // how to set equality
if (this.events[numEvents] == )
{
// what to put here?
}
}
// same as above but matches the (Date date) arguments
void printEvents(Date date) {
toString();
}
// Return the first Event in the Calendar that has a matching (equals) activity field. If no match is found, you must return a reference type, so return null.
Event findEvent(String activity) {
//what to put here?
return null;
}
void dump() {
for (int i = 0; i < MAXEVENTS; i++)
{
if (events[i] != null)
System.out.println(events[i]);
}
}
}