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;
When i click on 'Add Invoice' button open a dialog box. input data in dialog box. After click on 'Save Invoice' all the data of dialog box is render in primfaces datatable. After that click on 'Save Invoices' all data of primefaces datatable and HTML table data are store in ipsDetail and Invoice object of Managed Bean class.
Here, Problem is ipsDetail elements NULL when click on 'Save Invoice' button in addRow() so that primefaces datatable not updated. So that i can not insert new invoice data in database table.
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).
I have a button that bolds all the text in the main div. I am trying to get it to change back to the normal text after it has been bolded. But I cant figure it out. It bolds the text and changes button value when button value is "Bold", but when button value "UnBold" and user clicks button the text does not unbold. Here is my function.
function boldDiv() { var button = document.getElementById("firstbtn"); var oldHtml = document.getElementById('main').innerHTML;
Coding to show pop when focused on any button or text field...i want to show inf pop when we take mouse cursor on any button or field..want coding to be written in action performed in netbeans....
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.
I just went over how to open and edit text files in java. Was wondering how to open mp3, mp4 and other media files, is there a special package i need to import or plugin that I need to install in eclipse?
There is no error shown in the code. but, when i run my program for start, the page before cannot proceed and yet, i cannot proceed to this page and the application stop unexpectedly. below is the error that i gain in logcat.
11-22 06:59:57.664: D/dalvikvm(290): GC_EXPLICIT freed 1505 objects / 106560 bytes in 184ms 11-22 07:00:39.174: D/dalvikvm(320): GC_FOR_MALLOC freed 2489 objects / 160496 bytes in 109ms 11-22 07:00:39.534: E/MENU PAKEJ A(320): Total Price: RM 0.0 11-22 07:00:39.544: D/AndroidRuntime(320): Shutting down VM
In JButton's click event, I wanto to show a JPanel to print the message "Processing" on the screen. Before JButton's click logic end, hide the JPanel.
Actually, JPanel is not displayed. I do not know why.When msgPanel .setVisible(false); is commented out, JPanel is normally displayed .But do not know how to hide it when JButton's click logic is finished.
Here is the code.
loadBtn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { JPanel msgPanel = new JPanel(rootFrame); // Show the message JPanel
So when writing my first "Hello World" app everything seemed to work just fine. I wrote the code, compiled it, and then ran the class file and it worked, I got the return Hello World! But when I tried to write another app which is basically the exact same thing just a different sentence, I keep getting a bunch of error codes saying illegal character. I did everything the exact same. I am using Text Edit on a Mac and using Terminal to execute the Java code.
Here is what I wrote....
public class MyFirstApp { public static void main( String[] args ) { System.out.println(“i rule the world!”);
As shown in the SS I show the data of the batch from the db.Now I want to edit the data of the jtable using the default Double editors and also show the data using a Date renderer in dd/MM/yyyy format.The problem is when the data is loaded from the db,I am not knowing how to implement and set the editors to double and date.I am new in java.The code of the above is shown as follows.
Java Code: /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package Billing; import java.awt.Component; import java.sql.Connection; import java.sql.Date; import java.sql.PreparedStatement; import java.sql.ResultSet;
The program below compiles and functions correctly for the most part. It is supposed to be a simple GUI Text Editor with Edit and Format functions. The content pane is supposed to be a scroll pane, however no matter how much I type into the editor, the scroll bar does not appear. Also, the none of the functions under the "Edit" menu work.
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
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.
I am working on web project in java. i have taken buttons in column..and projects is my column..when i click on a button in first row ,i want fetch all information about selected project....so how can i do that?
I have a textbox called "answer" and 10 different buttons on a form. Now what i would like to do is click the button and have the Button Text in the textbox with the already present text.
So if i click the button 1 it should automatically recognize the clicked button and have its text copied to textbox.
I know the '.get' method but lets say i have 100 buttons so i cant repeat it for every single one of them.
I'm using java FX-8 and JDK 1.8,Netbeans 8.0.2.I want to open pdf on button click in my JavaFXML Application.I have triued pdf viewer plugins and iText but it doesn;t work.I have to pass variable value in pdf too.
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.
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.