All Questions
12
questions
-2
votes
1
answer
2k
views
How to display a list of objects as a JList in java swing?
We are asked to build a system in Java Swing no drag and drop and I cannot understand how to display a list of objects in a JList.
I have a GUI class that creates a JFrame, JPanel, and an empty JList ...
- 3
0
votes
1
answer
705
views
Combining arraylists of different object types into one
I have some arraylists which contain objects (for a paint like program) based on a constructor in a class, and wish to put them all in the same arraylist rather so each item redraws in order.
ive ...
- 81
0
votes
1
answer
562
views
Save Selected JTable Rows and Show them in another JTable (in another JFrame)
I have a table with some data. I want to select a couple of rows which I want to monitor (I will then display these rows in a new JFrame with its own table) - let's call this monitored records.
I ...
0
votes
0
answers
153
views
How to take User input in one frame and adding it to an arraylist to display on another frame
how do you get the User input inside JTextFeild and SET/ADD the input to the table in another frame? Student objects are stored in an ArrayList. The array list is added to table view and displayed in ...
- 1
0
votes
1
answer
729
views
JTable storing row values as object
At the moment, i have a table that has no row values when it is built, rows are added in after i click the add button. when i click the add button, it will add a row to the table and there are cells ...
- 95
-1
votes
1
answer
51
views
can't added my object to to ArrayList
i tried to add an object to ArrayList ?
but ican't whyyyyyy ?
ArrayList<Patient> emer;
Patient p = new Patient();
p.setName(jTextField1.getText());
p.setSurname(jTextField2.getText());
p....
0
votes
5
answers
132
views
Arraylist of Objects - How do I remove an entry?
I am doing homework and it states that I have to be able to remove a entry from an arraylist of objects.
I try to check if it contains the user id I want to remove but objects cannot contain strings
...
- 101
0
votes
1
answer
635
views
How do I implement backup and restore using serialisation with multiple classes?
Im trying to serialise objects(Names and notes) which I store in my JTable. I want to be able to save this information to a file and when I load the program, the information should load into the ...
- 3
0
votes
1
answer
82
views
drawing out objects from an array
Sorry for asking a question again guys, but im stumped yet again, Arraylists just dont like me ;).
Now im stuck with the problem of drawing out the objects, they wont be drawn except for maybe one in ...
- 15
3
votes
3
answers
5k
views
Adding rows to JTable in the right order.
I am writing a code in which data is collected from an arraylist of arrays, which I add to a JTable. However, the code always adds the data bottom-side up, so if there are two rows of data, it adds ...
- 1,333
0
votes
3
answers
5k
views
Java: Filling a JComboBox with objects
I'm trying to fill a jComboBox with objects. I have it working in one class, but in this class it's giving a NullPointerException but the code is almost the same. What am I missing here?
The code I'm ...
- 1,639
3
votes
1
answer
7k
views
Adding an array to a combo box
I want to add an array to an existing combobox without passing the array object as a argument in the constructor. Is there perhaps a way to do this by using a method?
Something like the following
...
- 8,943