Swing/AWT/SWT :: JTable - Cell Keeps Focus After Clear Selection

May 7, 2014

I'm having a small problem using a jTable.

After calling the .clearSelection() methode of the table object, the cell clicked in when selecting the table row, keeps it's focus.

How do I remove the focus of the cell?

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Swing/AWT/SWT :: Color To Persist In Cell Of Jtable After ComboBox Selection

May 29, 2014

I have a ComboBox I'm using for a cellEditor. The list of items in the comboBox might have colors behind them, which I've managed to render. What I haven't figured out is a good way to keep the color in the cell after the item is selected.I don't' want to have a persistent comboBox in the cell, i only want to see it when editing that cell.

public TableCellEditor getCellEditor(int row, int col)
{
if (row==theRow && col==theCol)
{
JComboBox<?> combo = new JComboBox<Object>(getPickListEntries());
combo.setRenderer(new PickListRenderer(combo));
combo.setBorder(BorderFactory.createEmptyBorder());
}

[code]....

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Swing/AWT/SWT :: Set A Column In A JTable To Make It Unable To Gain Focus?

Jun 29, 2007

How would you set a column in a JTable to make it unable to gain focus i.e. select the next column on the same row or ignore the command completely when selecting a column that should not be able to be gained focus on?

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Swing/AWT/SWT :: How To Get Double Value Into JTable Cell

May 29, 2014

My latest issue was that I wanted to only get a double value into a JTable Cell.

So first I Overrode the getCellEditor(int row,int col) method of my JTable, so if I was in a cell i knew I needed a double value I returned my Editor.

My editor filters out anything but numbers. I also check to make sure we get one and only one decimal point.

Other solutions Ive seen use keyboard Listeners, but to me that doesn't work. What if the user cuts and pastes data? My solution handles that as well.

It doesn't handle if they try to cut and paste something like 1234abcd.bob.123.23 , this would result in 1234..123.23 pasted in. I'll handle faulty values on the getValue method of my AbstractTable, but as long as the user is using mostly valid data this works well.

public TableCellEditor getCellEditor(int row, int col) {
if (row==TheRowWant && col==TheColumnI want) {
return (new DefaultCellEditor(createDoubleTextField()));
}
}
private JTextField createDoubleTextField() {
final JTextField field = new JTextField();

[Code] .....

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Swing/AWT/SWT :: Peculiar JTable - Cell Value Vanishes

Aug 20, 2014

I am facing some peculiar issue with JTable.

Change value of a cell, without clicking on anywhere else, directly click on column (or) try to expand column size, value you entered in that cell vanishes. But if you click on any other cell instead of expanding column size, value will remain in cell. Not really sure how to fix this issue.

class SimpleTableExample
extends JFrame
{
// Instance attributes used in this example
privateJPaneltopPanel;
privateJTabletable;
privateJScrollPane scrollPane;

[Code] ....

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Swing/AWT/SWT :: JTable Using CTRL / Click For Multiple Row Selection

Jul 6, 2014

I know how to do single selection, but I would like to do multiple row selection only by using CTRL + click without the option of dragging the mouse to select rows. So the user would have to hit ctrl + click each time to highlight additional rows.

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Swing/AWT/SWT :: Custom JTable Renderer And Cell Editor

Jul 23, 2014

What I'm trying to do is make an inventory type program that includes a jtable. In the Jtable in the last column there will be 2 buttons and a textfield to register the value of additions or subtractions to the overal stock amount. (See screenshot in attachment).

As of now I am able to increment or decrement the numbers when the buttons are clicked on however the problem is that if I add 2 to the first row, and then go to add 2 to the next row or any other row for that matter, the value of the previous row is added to the next row, and the previous row reverts back to a value of 0. So basically its like there is only one editor that keeps track of one value no matter what row you are editing.

I need getting it so that I can add different values to each different row depending on the stock being used or received. The following is my code:

Main class

JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(10, 155, 643, 233);
IMG.add(scrollPane);
center = new centerJustify();
ts = new tableCellRenderer();
tm = new DefaultTableModel(){

[Code] .....

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Swing/AWT/SWT :: Making A Custom Cell Renderer Work In A JTable?

Jan 24, 2014

Now my issue is I have a JTable. The first column will contain Date objects all the way to the bottom. I want the JTable to display only the month and year. I created a custom cell renderer, but it appears the cell renderer method "getTableCellRendererComponent" is never called. (I tested it using System.out.println();) Here is my code for setting the cell renderer and the contents of the first column:

MonthYearTableCellRenderer renderer = new MonthYearTableCellRenderer();
tblView.setDefaultRenderer(Date.class, renderer);
for(int i = 0; i < 60; i++){
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_MONTH, 1);
cal.add(Calendar.MONTH, i);
tableModel.setValueAt(cal.getTime(), i, 0);
}

The Date objects are set into the cells of column 0 correctly. The table shows the result of the "toString()" method for each cell in that column.

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Swing/AWT/SWT :: Changing Color Of Jtable Base On A Row Of Cell Value In One Column

Feb 10, 2014

My code is

Double qty = 0.0;
for ( int i = 0; i < ingTable.getRowCount(); i++){
qty = (Double) ingTable.getValueAt(i,2);
if( qty < 30.0){
ingTable.setBackground(Color.red);
} else {
ingTable.setBackground(Color.white);
}
}

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Swing/AWT/SWT :: Copy Selected Data From JTable Cell To Clipboard

Feb 18, 2014

I have a jtable that I would like to copy from a cell that I select to clipboard. How could I do these.

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Swing/AWT/SWT :: Update JTable Cell Values Inside A Loop

Jan 5, 2015

I have a program where i want to indicate the user when i have completed a task which i am running inside a for loop. Below is my code.

for(Map.Entry<Double,SimplestCopyInstance> entry : myList.entrySet()){
double key = entry.getKey();
SimplestCopyInstance scp = entry.getValue();
Copy cp = new Copy();
cp.putLocations(scp.getSrc(), scp.getDes());
scp.setStatus(cp.baseCopy()+"");

[Code] ....

I have used netbeans to build my app. So there creating jTable is out of my control as that part was inside auto-generated code. I have just used the jTable.setValue().

My problem is, above method is inside a button click event. Updated values not displaying until the loops ends.

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Swing/AWT/SWT :: JTable Cell Renderer Causing Program To Go Black When Minimized

Aug 25, 2014

I'm making a program that selects classes from a database via a jcombo box and then populates a time table with the class times.

I've used a custom cellrenderer that extends DefaultTableCellRenderer to text wrap the information and change the background of the cells.

It works but when i minimize the program it goes all black and if I double click I get a new JTextArea opening up on the timetable and when I minimize the program and go to open it again i get an "Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException" and the cell render seems to be called again even though i haven't rerun the program.

This is the cell renderer that I built

public class TimesTableCellRenderer extends DefaultTableCellRenderer {
private int minHeight = -1;
private final JLabel label = new JLabel();
private final JTextArea textArea = new JTextArea();
public TimesTableCellRenderer(){
super();
textArea.setLineWrap(true);

[Code] ....

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Swing/AWT/SWT :: How To Change Color Of Column Header When Cell Is Clicked In JTable

Jan 20, 2015

I'm working on a spreadsheet-like table and I was able to set it so that it would highlight the first cell in the relevant row(titled 1,2,3.. etc) when a cell is clicked. (Just like in MS Excel - preview attached) Now I want to do the same to the column header(i.e. A,B,C,D....etc) . How can I do it?

private void formWindowOpened(java.awt.event.WindowEvent evt) {
setLocationRelativeTo(null);
int rowNum = sheet.getRowCount();
for(int i=0; i<rowNum; i++){
sheet.setValueAt(i+1, i, 0);

[Code] .....

Untitled.jpg

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Swing/AWT/SWT :: Code Prevent Cursor From Moving When Inside A Cell Of JTable

Jun 24, 2014

Tried creating a simple sample but all works as expected.

The following code prevents the cursor from moving when inside a cell of a JTable.

public void keyPressed(KeyEvent e) {
if ( (e.getKeyCode() == KeyEvent.VK_KP_LEFT) || (e.getKeyCode() == KeyEvent.VK_KP_RIGHT)
|| (e.getKeyCode() == KeyEvent.VK_RIGHT) || (e.getKeyCode() == KeyEvent.VK_LEFT) )
{
//Do nothing
e.consume();
}
}
});

When editing a cell, the existing code would use the right/left cursor keys to move from cell to cell as opposed to from character to character when editing a cell. I planned to override the functionality by tossing in the above code as a test to see if it stops the functionality before I override it.

After placing in the above code, the above functionality no longer occurs, but now the cursor moves within the cell as I wanted which is to move from character to character instead of cell to cell. Its great it works, but it really shouldn't. Essentially the default behavior has been restored when it should have really disabled the left/right keys.

I assume there is some underlying class someplace that is doing something to affect the behavior. Since a sample can't be provided I am wondering in what scenarios would the e.consume() restore default functionality?

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JavaFX 2.0 :: TableView Single Cell Selection Styling

Jun 6, 2014

TableView selection model allows selecting single cells in the table but the default styling highlights the whole row regardless of the actual column selected in the row.

I am just wondering what options are there to change this behaviour so that the actual cell (row/column) get highlighted rather then the whole row.

Something like the $18,000 cell in the  "Figure 1 Table overview"  in [URL] ....

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Focus Listener - JTable Stops Showing Data In It

Apr 5, 2014

public void createSearchArea(){
filterText = new JTextField("Search Here");
filterText.setForeground(Color.gray);
filterText.setBounds(130,5,950,25);
filterText.getDocument().addDocumentListener(
new DocumentListener() {

[Code] .....

I want to add a text to JTextField whenever the text field is clicked it should be removed and if user types nothing then it should come back.

I've used focus listener but on focus lost my JTable also stops showing data in it.

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JButton In A JTable Cell

Aug 19, 2014

How do i parse a String of text in a JTable Cell to work as a button?For example lets say a row of IDs such as 1,2,3,4,5,6 id like the whole column to parse as JButtons that are titled 1,2,3,4,5,6..Id like to then use these buttons to call a function with the title as a parameter.Its just a simple row of entries where the button will open up an edit screen to edit the corresponding clicked entry.So how do i parse them as buttons for a start?

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JTable Specific Cell Selected

Jun 6, 2014

I want perform some calculations whenever a specific cell block is focused in JTable, I've tried using focusListener on JTable but looks like my table isn't triggering the event. I don't know why, what to do?

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Key Binding JTable Cell Entries

Jul 8, 2014

I have an editable JTable that has a lot of JComboBox's as cell entries. I would like to be able to "arrow over" to said cell, and with a pressing of either a numerical button or by typing the first letter of the String selection (possibly followed by a second), be able to select the appropriate selection from the cell's JComboBox. I have tried to add a key listener to the JComboBox itself, which works given that I click on said cell and show its menu.

How would I go about ensuring that, when focus is on the cell itself, and I start typing, the appropriate selection is chosen?? (I think this might get into key binding, but I don't know if I have to try it from the scope of JTable, or from that JTable's TableModel (which I have made my custom version of).

Here is what I have so far (everything but SandwichNumber, SandwichName, and Oregano uses JComboBox): [URL] ...., how would I do such key binding?

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How To Merge Cell In DefaultTableModel / JTable

Feb 18, 2014

I searched a lot and got some answers for this Q. but many of them referred to links which give 404 error. I want to make table like this:

Can I make this in Java?

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Jtable Cell With Search Depends On Value Entered?

May 31, 2014

I am trying to do the fallowing ,

Jtable cell with search (% like) depends on the value entered

if i enter "mi" it should show all data begin with "mi" from my data set

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JTable With ImageIcon - How To Use Array With 4 Values In Table Cell

Mar 22, 2015

I would like to create a JTable.
 
Each cell contains an array of 4 objects:

[0] ImageIcon
[1] ImageIcon
[2] Number
[3] Boolean

1) Once JTable is displayed, each cell display only [0] .
2) Later, based on user mouse click on cell, cell should display [1]
 
How can I use an array with 4 values in Table Cell?

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Jump Games - Put Images Into JTable For Organization And Character Selection Purposes

Jul 14, 2014

HTML Code:

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.border.Border;
import javax.imageio.ImageIO;
public class Main extends JApplet implements Runnable, ActionListener {

[Code] .....

I am making a game and there are two problems that I have and can't seem to solve. I never made on applet before, and I'm not good with the swing components, but I am decent programming in Java.

Problem #1: the start button is in the JPanel, I don't want that, I want it to be above the JPanel.
Problem #2: I want to put images in to a JTable for organization and character selection purposes, but I keep on getting a string. Do I have to use an ImageIcon to get it to work, or does it matter?

In case you were wonder what kind of game I'm making, I'm making one of those jump games where you jump on platforms and try to go as high as you can without missing a platform. There is going to be character selection for the jumper, and the jumpers are going to be food, like a potato, a banana, a strawberry, etc.

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Custom Jtable Cell Editor Throwing Illegal Component State Exception

Jul 10, 2014

I've come across an interesting problem when using a Jcombobox as a custom cell editor(and renderer) in a jtable. I was hoping to add a keybinding in order to display the dropdown of the combobox instead of having to click on it however, when I make a call to showPopup() I get:

Exception in thread "AWT-EventQueue-0" java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location Which is strange as my jtable is visible and the editor/renderer seems to be working fine.

Here's the cell editor + renderer I'm using:

class MyComboBoxRenderer extends JComboBox implements TableCellRenderer {
public MyComboBoxRenderer(String[] items) {
super(items);
} public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());

[code]....

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Clear JButton Will Not Clear Text

May 6, 2014

import javax.swing.*;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.*;

[code]....

My issues is at the bottom, I can't get the clear button to clear, well it clears but it also show the JOptionPane. I couldn't find the edit button on the page

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Swing/AWT/SWT :: How To Customize Focus Traversal Through Tab Key

Apr 29, 2014

I'm facing a problem in controlling the focus traversal mechanism inside a jframe...as i want the focus to travel from top to bottom by pressing tab key regularly , but it travels left to right and then top to bottom through the textfields... The form looks like
textfield1 textfield4

textfield2 textfield5

textfield3

The focus travels from 1 to 4 , 2 to 5 and then rests at 3. but i want it to be like from 1 to 2 to 3 and then 4 and 5....

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