Array « JTable « Java Swing Q&A

1. Java nested list to array conversion    stackoverflow.com

What is the most efficient way to convert data from nested lists to an object array (which can be used i.e. as data for JTable)?

List<List> table = new ArrayList<List>();

for (DATAROW rowData ...

2. How do i delete an empty array of objects?    stackoverflow.com

i define an object:

tempRes = new Object[100000][7];

3. Load an array to a Java table    stackoverflow.com

This is driving me crazy. I read the Sun's tutorial regarding the creation of a basic table with a default data model, but cant figure out a simple example about how ...

4. How to display a 2D array in jTable?    stackoverflow.com

I have a static 2D array called "Status.Data[][]" and a Column header called "Status.Columns[]" I am using net beans and I want to be able to have the arrays populate the table.

 ...

5. How to Retrieve JTable Data as an Array    stackoverflow.com

So I've populated a JTable through a DefaultTableModel with the (Object[][] data, String[] headers) constructor. Users can edit the table, and I want to be able to load the new data ...

6. Multi Dimensional array to JTree in java    stackoverflow.com

i want to assign a multidimensional array to jtree. how can i do this? here is sample of an array: ROOT:{ FolderA : {FileA,FileB} , FolderB: {FileA,FileB} } .... Also i want to determine ...

7. How to use an array containing JButtons within a for loop to draw a grid?    stackoverflow.com

public void loadBoard()
{
for(int row = 0; row < 5; row++)
     for(int col = 0; col < 5; col++)
    {
      ...

8. JTable and array value problem    stackoverflow.com

I have this code to display my file into JTable but I have an error

array required, but java.lang.Object found

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.io.*;
import ...

9. Adding an Array to JTable in Java    stackoverflow.com

Since you create the JTable with an matrix for data and array for the columns I figured there should be a way to after created the JTable adding an array (row). ...

10. Initialize table with array of objects    stackoverflow.com

I am having a problem initializing a JTable from a FOR with BD or an array. My problem is the example tableFilterDemo.java, I need the funcionality of this, but when I want ...

11. JTable object array    stackoverflow.com

String[] columnNames = {"Type", "Employee ID", "First/Last Name","DOB", "Gender", "HIre Date", "OnCall", "BaseSalary", "Commission/Hourly Rate"};
    Object[][] data = new Object[10][9];
table = new JTable(data,columnNames);

public ArrayList<Person> employeeList = new ArrayList<Person>();
public ...

12. Help Need for JTable / Object[][] array    coderanch.com

Rob is right. And this whole thread is really confused and I can't understand what is going on. Please make sure to maintain indentation and put code tags round the code. Please avoid writing U'r for You're; a lot of people find that difficult to understand. Mohammed Sanaullah is quite right; what people call a 2D array is in fact an ...

13. Apply 2d array of answer to the right position of JTextField grid with JCheckBox    coderanch.com

I'm trying to make a JCheckBox that will apply answer to the JTextField when being checked. The answer is in 2Dimensional array and I want to apply the answer in the right/exact position as the topLeftNum. When i change the answer into ans, i got the answer displayed but in the wrong position. But, what i want to ask is why ...

14. converting 1D array to 2D for JTable    java-forums.org

Hi. I've been practicing using JTable and i know it requires a 2D array object but is it possible to convert a string of 1D-arrays into a string of 2D-arrays? My personally solution to this might be compairing the start and end of each string element in the array[] then cycle through till the end and in the process copying each ...

15. Initialize table with array of objects    java-forums.org

Good mornigns I have a problem to initialize the jtable from a FOR with BD or an array. My problem is the example tableFilterDemo.java, I need the funcionality of this, but when i want load data of my BD or an arraylist i have the problem. I need load the array of objects with a FOR getting all the lines of ...

16. How do i get my data from a 2d array and add it to a JTable    java-forums.org

hi, I have some textboxes that users will be able to enter information into. When they click ADD, the information is supposed to go into a JTable. I am having difficulty figuring out how to add this info from the textboxes to the 2d array and how to then add the info to the JTable. Here is my code: Java Code: ...

17. 2d array grid in JPanel with random placed images    java-forums.org

Hello all, I'm new at java programming so bare with me... i'm trying to make an game Its an tile based game for 1 player -The player can move one tile at a time -The grey squares are fixed positions -The blue squares are moveable (one tile at a time if you push it) -The red pacman like sprite is the ...

18. adding elements to a multidimentional Object array for a Jtable    java-forums.org

I am creating an JTable to display monthly payments for a mortgage. I have been able to get all the calculations to work and to display everything n a GUI but unless I set the Object array = to data upfront it will not display. I need to find a way to fill the array form the equation loop then display ...

19. Table Column to Array for JList    forums.oracle.com

I would post my code here.. but I've tried so many different approaches to this that I wouldn't even know where to begin to post. Here's what I'm looking for, and I'm sure it's something easy for the awesomely skilled programmers who view this forum I need to take a column from a database and turn it into an array to ...

20. Jtextfield into an array, sort????????    forums.oracle.com

21. java.lang.classexception => when saving a string from JTable in array    forums.oracle.com

Hey , It is just a typo should be j OK will try to post it nicer next time:-) OK so when I print it out like : Object Value= table.getModel().getValueAt(i,j); System.out.println("The data at:"+ i +"and" + j + "is :"+ Value); Then I get the right values with String and int, so it has to go wring somewhere from changing ...

22. i use Array.sort() in swing and awt please help me with my code    forums.oracle.com

23. Array NullPointerException with JTable    forums.oracle.com

burgs, I don't have the stacktrace here (obviously) so this may be a little vague. Look at the stacktrace, on the first line there will be something like NullPointerException ... In the remainder of the line it will tell you the class that's executing and the line where the NullPointerException occurred. The bottom line is that you have an object that ...

24. Moving data from an array to a JTable    forums.oracle.com

Hi, I am facing some problems with handling array data to JTable. My objective is moving data from a 10X5 data array to a JTable. I am using the following code: String columnNames = { "Col 1", "Col 2", "Col 3", "Col 4", "Col 5" }; for(int j=0; j<10; j++) data[ j ] = array1[ j ] + array2[ j ] ...