Thread: Problems with my HW

Be more specific! We can't read your mind and know exactly where the errors are, however while there is nothing inherently wrong with using an array list, it may through some OutOfMemoryExceptions if they schedule a lot of appointments (Or have lots of contacts).

I`m just telling u that I used an arrayList so that I can add items so I can achieve steps 1, 5, and 9, my question is how can i create a method to display the results which are the items I have in an array of reminders for example, depending on the year month and week that should be given by the user, and each entry in this array that I already created have a year, month, and day attributes or fields, if you read my question above you would`ve seen that I already clarified that I had a problems with enforcing steps 6 and 10, anyways thanks for tryin to help

how can i create a method to display the results which are the items I have in an array

Sounds like you need a loop to go through the array and select the items and data to be displayed.

Norm I already did that, but what I need is to display them at a date given by the user, since each entry have year, month, and day, I used scanner and get methods to compare em and it still didn`t work that`s where I need help I need help at finding a method that can compare the year, month, and day of an entry to the year, month, and day specified by the user, I hope it was clear enough.

a method that can compare the year, month, and day of an entry to the year, month, and day specified by the user,

Can you show the code that you are having the problems with?
If you use the Calendar class and its subclass there are methods for working with dates.

What does your posted code have to do with going through the elements in an array and choosing some of them based on a user's input?
reminder must be a class object, not an array, because you are using a get() method instead of array notatoin:[i]
What does the reminder object contain? Does it have class objects that you need to look inside of to determine if the user wants to select that object?

In a loop you need to get the objects one at a time and somehow determine if that object is one the user wants. This can be done by having the object's class have methods that can be used to get at specific items in the object, like the year, month and day. There are many ways to do this.

public class Reminder {
String subject;
int year;
int month;

int day;
int time;
String importance;


public Reminder(){

}
public Reminder(String i, String s1, int y, int m, int d, int t) {
subject = s1;
year = y;
month=m;

day=d;
time = t;
importance = i;
}

@Override
public String toString() {
String str = "Reminder{ Subject: " + subject + ", year=" + year + ", month=" + month + ", day=" + day + ", time=" + time + ", importance=" + importance + '}' + "\n";
return str ;
}

public int getDay() {
return day;
}

public void setDay(int day) {
this.day = day;
}

public String getImportance() {
return importance;
}

public void setImportance(String importance) {
this.importance = importance;
}

public int getMonth() {
return month;
}

public void setMonth(int month) {
this.month = month;
}

public int getTime() {
return time;
}

public void setTime(int time) {
this.time = time;
}



public int getYear() {
return year;
}

public void setYear(int year) {
this.year = year;
}

}
That`s everything related to the class reminder, and if the method I posted ain`t got nothin to do with it can u tell me which method does?,
and about the array I created that array from the class above like that private ArrayList<Reminder> reminder = new ArrayList<Reminder>();

If the class needs more methods to solve your problem, then you should add them.
What data do you have that you want to use to select an object from the arraylist?
year, month and day?
The Reminder class has methods that return the value of each of them. Use those methods to get the object's contents and compare the values returned against the data that you have for selection.


An ArrayList is not an array. You need to use the correct words when describing your problem.

Ok man when I did get the year, month, and day using the getter method in the reminder class and compared them to the user`s input it didn`t work for me could you help me by giving me a code to compare the year, month, and day with the user`s year, month, and day inputs.

it didn`t work for me

Post the code that didn't work and explain what problems you had with it.

I used both scanner and JoptionPane to ask for the users input then I did that
Reminder re = new Reminder();
String str = ""
if(re.getYear()==scan.nextInt()){
for (int i = 0; i < reminder.size(); i++) {
str = str + reminder.get(i).toString();
}

return str;
}
then at the main GUI
the button that do the display I put that method inside it
DataBase1(the class containing the method above ) db = new DataBase1();
then to display at the text area I put
displayTextArea1.setText(db.toString1());

You need to show these things:
1) Where is the data from the user? What variables is the data it read into?
2) Where do you get the next Reminder object from the ArrayList?
3) Where do you compare the data in the variables (see step 1) from the user against the contents of the Reminder object (see step2)?

Don't try to do it all in one step:
re.getYear()==scan.nextInt()