How To Fill Contents To Jtable Dynamically On Button Click

Dec 17, 2014

this is my code

private void showresultsActionPerformed(java.awt.event.ActionEv ent evt) {
Object dbs=db.getSelectedItem();
Object colls=coll.getSelectedItem();
String distances=distance.getText();
String skillss=skills.getText();
DefaultTableModel tb=new DefaultTableModel();
MongoClient m = null;

[Code]...

i have added the columns but how could i show up the change??

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Jun 20, 2014

Am trying to add buttons dynamically in a new Jpanel on click of a button. i am getting new Jpanel but not able to see the buttons.

btnNewButton_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if((!(playerFirst.getText().equalsIgnoreCase("") ||playerSecond.getText().equalsIgnoreCase(""))&&(!playerFirst.getText().equalsIgnoreCase(playerSecond.getText())) ) ){
//unoGameController.playGame(playerFirst.getText(), playerSecond.getText());
CardLayout cardLayout=(CardLayout)(frmUno.getContentPane().getLayout());

[Code]...

prepareHandsForGuiCode is

public UNODeckMain prepareHandsForGui(UNODeckMain unoDeckMain){
JButton[] btnArr =new JButton[50];
for(int i=0;i<50;i++){
btnArr[i]=new JButton("hi");
panel_player1.add(btnArr[i]);
}return unoDeckMain; }

Am i skipping something ?

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The gist of it is to create a very basic memory game. There are 12 buttons, each associated with an icon. Every button that you click will display the icon and will stay there until clicked again. I got the bulk of it taken care of, but my issue lies with switching the icons back and forth. I can get them to display one at a time, but when I click on a new button, all the icons except the button I just clicked don't display. Essentially, only one shows up at a time.

import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.SwingConstants;

[code]....

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Why this code is not working/my JTable won't updated after i click the button

import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
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import java.sql.ResultSet;

[code]....

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The problem is, also when I have only one row in my jTable, the size of the jTable is a little more bigger than 40 rows.

How can I say the jTable, that she should scale to the size of the content?

I don`t want that the jTable is bigger than the content. For example the picture below:

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Refer this link for further details : stackoverflow [URL] .....

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Note: I could simply add the code to show the widht of the column to adjust according to largest row content for that column . But unfortunately this is not what is required.

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I want to create a Jtable when i click on "new" on the menu bar,but if i click on it, i still not see the table.Here is the code:

package mestint
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
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[code].....

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i have two classes, one is a GUI program and the other is an index writer program. the GUI program uses a j file chooser to select directories and display them in the text fields.the index writer is supposed to take the directories in the text fields and read from one(document location) and write into the other(index location) i want to run the index writer program by the click of a button(indexfbuton) in the gui programi have been able to get the directories to display in the text field but when i click the button to run the index writer class, nothing happens..here is the GUI class

package upload1;
import upload1.IndexFiles;
import java .awt.*;
import java.awt.event.*;

[code]....

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I have been trying to develop a small desktop application. I have JFrame and a button. When I click the button, the app is supposed to save record to database. But it is impossible to click the botton twice. To explain in detail: when a user fill in the form and click the button, the app will warn the user if he/she haven't fill in the appropriate JTextFields. After warning it is impossible to click the button again. I mean after first click, the button is busy and impossible to click.

import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;

[Code] ....

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private void jtPropertyChange(java.beans.PropertyChangeEvent evt) {
DefaultTableModel model = (DefaultTableModel) jt.getModel();
try {
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection(url, user, password);
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[Code].....

the adding part seems to be fine

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Example of my table.Head1Head2 Head3Head4 ( table headers )

“R1C1”“R1C1”“R1C1”“R1C1”
“R2C1”“R2C1”“R2C1”“R2C1”
“R3C1”“R3C1”“R3C1”“R3C1”

Below is a snippet from DataTable component to display the contents of the “Head4” column.

<p:column headerText="Head4" style="width:150px;height:8px" >
<h:outputText value="#{message.data}" />
</p:column>

All the entries in the table are of type String.However, the String content for the “Head4” column can be very larger and displaying this makes the table very large.As an alternative, is there a way to provide a button for the “Head4” for each row and when the user selects the button on that row, the corresponding “Head4” column contents is displayed in a pop up dialog box ? I am using Primefaces 5.0.

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I know the '.get' method but lets say i have 100 buttons so i cant repeat it for every single one of them.

answer.setText(answer.getText() + ___________________);

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Feb 22, 2015

I have buttons created on a frame and then I register the listener from a controller in a controller-view relationship.

When I click the button on the face, the action never executes for some reason. I thought maybe there was a problem registering the listener but I can call the buttons doclick() method and it executes as it should. Perhaps I'm overlooking something really obvious here but I can't see it.

btnEight = new JButton( "8" );
// btnEight.addActionListener( controller );
btnEight.setBounds( 212, 90, 41, 23 );
frame.getContentPane().add( btnEight );

and then I add the listener

public void setController( ActionListener theController ) {
Component[] components = frame.getContentPane().getComponents();
for ( Component component : components ) {
if ( component instanceof JButton ) {
JButton button = ( JButton ) component;
button.addActionListener( theController );
}
}

again, when i click the button nothing happens. but if i add the following code

btnEight.doclick()

the actionPerformed invokes in theController as I intended.

You can see the entire project on GitHub so you can see the full context. The controller class contains the listener and the view class contains the buttons.

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Oct 21, 2014

I've recently decided to learn Java on my own using internet material such as forums, blogs and you tube. Ive never programed before but through some research I concluded that Java is going to be on the mid spectrum of difficulty as far as verbiage goes. I ma in no way implying that Java is easy but instead closer to spoken English that c++ if my research is correct. So here is my attempt at a basic program where I click a button and it will make an image appear. Not sure where Im falling short

package clicktoimage;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Clicktoimage extends JFrame {
private JLabel label;
private ImageIcon image;

[Code]...

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So this is my package structure:

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I am trying to switch panel on click of a button but nothing is happening.

package game.uno.swings;
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import javax.swing.JFrame;
import java.awt.CardLayout;
import javax.swing.JPanel;

[Code] ....

I read the oracle doc example, i understand the concept but still nothing is happening on show,first ,next method of CardLayout in ActionPerformed. Code is highlighted where I am facing problem.

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I want to switch panel on click of a button and code for switching panels is written in update method (Which gets called from notify observer of another class as part of Observer pattern.

unoGameController.playGame(playerFirst.getText(), playerSecond.getText());

playGame in Panel 1 of class 1 calls another class (class 2)and data comes in update method of class 1(Observer interface).

Now for switching panels code is in gameControllerDataProcessing . I am not able to switch the panels when this functionality runs.

However if i dont call the unoGameController.playGame(playerFirst.getText(), playerSecond.getText() and directly call the update method or directly write the switching panel code . then it works fine.

btnNewButton_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if((!(playerFirst.getText().equalsIgnoreCase("") ||playerSecond.getText().equalsIgnoreCase(""))&&(!playerFirst.getText().equalsIgnoreCase(playerSecond.getText())) ) ){
unoGameController.playGame(playerFirst.getText(), playerSecond.getText());

[Code] .....

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In my application, some text should be added to a text area in response to a click on a button. So as an action listener to this class, I made another class which implements the ActionListener.

Inside this class, I have obtained the text which I want to be added to the text area. But the text area is in another class and for the action listener I wrote another class.

Now the problem is that when I try to add the text to the text area by the following line of code, it says that textArea_1 can not be resolved or is not a field.

Java Code:

ParentPanel.textArea_1.setText("Name:"+ncrarray[0]+"
Code:"+ncrarray[1]+"
Rank:"+ncrarray[2]); mh_sh_highlight_all('java'); What should I do about it?

Even if I try to write a method like the following in the class in which the text area is created, it gives the same error.

Java Code:

public void printTextArea(String text) {
textArea_1.setText(text);
} mh_sh_highlight_all('java');

The text area is present inside a constructor of the class. I am writing the method outside the constructor (ofcourse).

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