I have in my app a JTable. I would like to know how can i do to, when i click in a cell, my jtable paint the entire line of this cell. Here is what i did.
Method call:
private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {
int row = jTable1.rowAtPoint( evt.getPoint() );// Don't know how to send this info through setDefaultRenderer.
jTable1.setDefaultRenderer( Object.class, new RowRender() );
I keep hearing these two term when it comes to painting in Swing, however, I'm not sure which is which. To my understanding is that the child components are the ones that already exist on screen (could be a JButton, JFrame, or custom painting) . and the parent components are the one to be added/drawn next. (hence, if we override the paintChildren() method when painting, the components that were already on the screen don't appear any more) ....
I'd like to enable/disable a jpanel and it's entire contents in one fell swoop. I could of course call each component's .setEnabled() method, but I figured there must be a better way!
I want to make a simple Table Tennis game. I have 2 drawing classes. 1st should draw oval and 2nd rectangle. But second class, which should draw rectangle doesn't work and if i use it together with oval class, then oval doesn't appear too.
Java Code:
public static void main(String[] args) throws InterruptedException { Intro i = new Intro(); Pall pall = new Pall(); Laud laud = new Laud(); i.frameID().add(pall); // this adds oval i.frameID().add(laud); // this adds rectangle i.frameID().pack(); i.frameID().setSize(400, 400);
I am attempting to make some Java2D shapes by wrapping them in subclasses of JComponent and giving them functionality. Unfortunately after defining paintComponent and adding it to the JPanel the shape is not showing up. As in my last thread the code is mostly irrelevant but the perhaps worth a skim. The only methods truely relevant are the paintComponent method in my shape and Sandbox constructor.
Java Code:
public class Sandbox extends JPanel { private Timer timer; private Circle c; public Sandbox() { c = new Circle(); add(c); setPreferredSize(new Dimension(400, 300));
Is it possible for a rectangle with dotted side be shown when dragging the mouse on a component?Just something like the one in the attachments, usually occurs in some graphics/pictures software.
My JTable has a row, row number 0, which I always want to be at the top.I tried the following two approaches, both without success:
1- Use a custom table cell renderer for the header, and create a header of two rows. the second row is my JTextField.
Problem: I cannot get the JTextField to function properly. (I've seen examples with a checkbox in the header, but that one just reacts to a click somewhere on the header, my textfield must be editable).
2- Use the first row of the table. This works quite nice. However, I must prevent row 0 to be re-ordered when sorting the table.
I was thinking to add a prefix (either something like "___" or "zzz" depending on current sorting mode), but I do not know which methods to adjust for this exaclty.
Another approach would be to have N textfields above the JTable in some layout (or two JTable's on top of each other).
However, Then I would need to react to the re-ordering and re-sizing of all columns as well, which does not seem easy to me.
I have encountered a very tricky spot in a project that i am working on. I must have a JTable to programmatically select the very last row in an AbstractTableModel. I have tried every thing but nothing works so far.
The problem is is that the JTable only scrolls down to the second last table row in the model? What am i missing?
//Show the very last row in a tablemodel object using the method updateTableRows //after an "insert action event" occurred public void updateViewMode(String name, java.util.List<NetworkSwitch> list, boolean flag) { CableTableModel model = cableTable.getCableModel();
[code]....
What happens is that the only row that gets selected is the second last row of the total rows iny AbstractTableModel object, "CableTableModel"
I am preparing a small solution. Below is how the functionality works.
1. Login Screen 2. Successful Login will take to a MDI Form 3. Click the menu, a JInternalFrame will open in the JDestopPane. 4. JInternalFrame has a JTable. 5. JInternalFrame has a JButton available for adding new data. 6. When JButton is clicked, a new JInternalFrame is popped up with some JTextField and JButton to save the data. 7. After saving the data (after insert query), a JDialog is opened to upload Logo (update query for BLOB), There are two buttons in the JDialog, one is for uploading the image, another one is uploading it later. 8. The logo is displayed in the JDialog and if the JButton, for upload is pressed, update the database and reload the JTable in the JInternalFrame is called.
My challenge is in point 8. The function is called properly, but the table is not getting refreshed.
JButton in JDialog for uploading the Logo private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: JOptionPane.showMessageDialog(this, "Image Uploaded Successfully"); companyConfig cc = new companyConfig(); //cc.reloadTable(); cc.updateTable(); this.dispose();
I've been creating a jTable where I can add / edit /delete new entries. Now i have 2 Questions :
1) My column 0 is filled with the row-number. I created a variable and with each "add" it adds +1 to the variable. That works, but as soon as i delete 1 row there is a gap ( 1..2..4..5..).
My question: Is there another way then mine to handle this?
2) The table is/should be working as some kind of database. The user is able to add Information (height, width,...). Now I want to sum the entries of 1 column (length,...). But as they´re objects I didn´t find a way.
My question: How can I sum the entries of 1 column of a table?
I am currently trying to make a Tetris game, so far I've got a class drawing that extends a JPanel as my canvas, a class Square that is 1 square(20 by 20) and a class LineShape that should draw 4 squares above each other. The class Frame way below is merely to set things up.
Currently i'm able to draw objects of my class Square, so I made a class LineShape that combines both and makes a 4Square long line.
My problem is when I try to draw an object of the class LineShape, it shows nothing, removes what is already painted(the square) and gives an error message:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at LineShape.<init>(Screen.java:96) at Drawing.paint(Screen.java:79)
I put my classes together so you can copy paste and run, make a new screen to start, to see the problem occur, go to the drawing class's paint method and uncomment these lines:
// LineShape shape = new LineShape(this); // shape.paint(g);
Below are my classes:
import javax.swing.*; import java.awt.*; public class Screen { private Frame frame; private Frame inputFrame; private JPanel panel;
I have 4 small applets on a page that simply prints out the quadratic equation for values passed in. There are 4 applets on a page that have different values assigned. They display fine.... sometimes.... if I refresh or generate new numbers sometimes one applet looks as though it has numbers overlapping the new values. If I resize or drag the browser everything displays fine again - no need to refresh the browser or anything. It's as though old values or something are being overwritten by the new or something similar is happening. What should I include in the paint method of the JPanel that might clear the applet before initial painting happens..... if anything?
Pretty much the title. Everything was running fine until a moment, when pain updated only once after the first resize. I've seen some worries about th.start(); or repaint(); but I did not manage to track the problem down since I'm a rookie at programming. Here's the Main class.
import java.applet.*; import java.awt.*; public class Main extends Applet implements Runnable { // variables Thread th; Player player; static Shot [] shots;
I am trying to get the data entered in a JTextField into a JTable but not clear on how. The LeftPanel is where the button is located and the RightPanel is where the JTable is. I want the actionPerformed to update the row of the JTable but I can't figure out how. There is another class that controls the GUI but did not think it was necessary to include. Also, I am aware that I am getting an error at the addRow line, can't seem to alleviate it.
public class LeftPanel extends JPanel {
private static final long serialVersionUID = -2311952438693382407L; private RightPanel rPanel; public LeftPanel(){ Dimension size = getPreferredSize(); size.width = 250; setPreferredSize(size);
I have a JTable with the model " Names " , " Quantity " and " Unit " .
I'm coding a program where you get the ingredients names.
So i need to get the whole row of one column and String it all up together,because i need to store it in mySql and i have already set it all as String.
how i can do this ?
My code are as follows :
JTable Code:
DefaultTableModel model = (DefaultTableModel)table.getModel(); if(!txtQty.getText().trim().equals("")){ model.addRow(new Object[]{ingCB.getSelectedItem().toString(),txtQty.getText(),unitCB.getSelectedItem().toString()}); }else{ JOptionPane.showMessageDialog(null,"*Quantity field left blank"); }
Getting the values and for storing :
for(int i = 1; i<= i ; i++){ ingredients = table.getName(); }
This is for loop is wrong and it does not work because i have a constructor to take in Ingredients but because it is inside the loop, it cannot take it in.
I want to add a Refresh button to my frame to refresh the data from the database, but I'm not sure how to refresh the data in the jtable. The constructor below initially creates the table and displays the data. Should my button destroy/create the JPanel all over, or is there a single method within the TableModel that will redisplay the data?
When I click on a row in a JTable, I want to have a row appear above it. For now I'm just making that row be a duplicate of the row I clicked on, but eventually this will be some sort of previous history of that row, so as you are editing the row you actually clicked on you can look directly above it and see what the data used to look like.
I"m not having any problem creating the row, nor am I having an issue getting it positioned correctly. What I want to do with this added row is made it so you can't edit the entire row, and also really make this row stand out. I'd like to say make this row stand out or "POP" so to speak so there is no confusing what it is. I'd almost like to make it look like the row header or even better... Most of what I am seeing are ways to make particular cells uneditable, so I think my backup plan is that, but Is there a good way to do what I described?
I am attempting to show a GUI that will show records from a SQL Server table. That part I have done. However, I need to allow the user to be able to edit the Approval field of the table when he/she views it. Following is my code:
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();
I am having a problem finding string objects in a jTable. I use setValueAt() to write string variables into a jTable.
I can then use getValueAt() to search to find any of those strings. All works fine until I edit an entry in the table. Then I can never find that string again.
In fact, if I just click in the cell type a character, then delete that character, something changes. The contents of the cell look the same but the search for it doesn't find it.
For example if I have a string "xyz" that was written in a cell. If I set the search value, "a=xyz", and "b=getValueAt(some cell)".
Then at the compare:
if(a==b) I can hover over a and b and I see that; a = (java.lang.String) xyz
and
b = (java.lang.String) xyz
[note I am using NetBeans to do this]
after the compare, the true path is taken .
If I then click in the cell then click out and try the same compare, everything is exactly the same including what gets reported when I hover. But the false path is taken at the "if".
I'm having serious issues right now with a JTable inside a JScrollPane.i have some methods that returns different indexes (rows) that i select programatically in a JTable and the problem is that sometimes it goes beyond of what i can see, like, the row gets selected but the scrollbar won't follow up.
i've searched up in google and saw several different methods but those were extremely complex and for stuff i don't need.the simplest solution i found is this:
but it just doesn't do anything.My table (tInfo) has only two columns so no horizontal bars, just vertical. What can i do to align the scrollbar with the currently selected row in my table? :C
Found a solution using scrollPane.getVerticalScrollBar().setValue();in another thread, i didn't even notice there were like 3 more threads about the same, just different kind of code used in each.
