In Android Studio, when referencing layout (GUI) elements, the normal flow is to use code as below: var tv = findViewById(R.id.tv_name) tv = myString But, in Kotlin, Prior Android version 10, it was easy to assign values to layout elements without using find_view_by_id by simply using: tv_name.text = myString However, this has stopped working and … Continue reading How to assign value to text view directly in Android Kotlin
Tag: GUI
How to make a form refer to the parent frame using a JDialog
Below code segment shows how to use a JDialog to refer to a parent frame. MyApp.java public class MyApp { JDialog dialog; JFrame parentFrame; public static void main(String[] args) { MyApp app = new MyApp(); app.gui(); } public void gui() { //The parentFrame parentFrame = new JFrame(); parentFrame = setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //The dialog dialog = new … Continue reading How to make a form refer to the parent frame using a JDialog
Delete all rows from a Java JTable with a custom TableModel
I want to clear all rows in a custom TableModel. Unfortunately, a custom TableModel in Java does not allow use of most efficient of row clearing methods, which only applies to a DefaultTableModel like that shown below: myTableModel.getDataVector().removeAllElements(); myTableModel.fireTableDataChanged(); To do an all clear like the above, for a custom TableModel, you need to reset … Continue reading Delete all rows from a Java JTable with a custom TableModel
Very good example of Swing and JDBC code in Java
If you are new to Java Programming and need to understand clearly how Swing GUIs and JDBC work together for GUI and databases, you should have a look at http://www.javabeginner.com/java-swing/java-swing-address-book. One of the best examples available on the net to understand database programming.
Manage services in Ubuntu using GUI – bum
You can manage Ubuntu services using a GUI tool called the Boot-Up Manager (bum). Open a terminal window and enter the following commands. $ sudo apt-get install bum <enter> $ sudo bum <enter>
Install Gnome Shell as alternative to Unity on Ubuntu
If you do not want to use Unity, the default Ubuntu desktop, you can install Gnome Shell using the following command in a terminal window: $ sudo apt-get install gnome-shell <enter>
Alternative desktops to Gnome 3 – Mate, Cinnamon
Linux users who find Gnome 3 clunky, now have a choice in desktop environments. You can install Cinnamon or go with Mate, which is fork of the Gnome 2 project. Funny that the Gnome developers did not realize that over time, their interface would introduce inefficiencies or wean away their users to other alternatives. Personally, … Continue reading Alternative desktops to Gnome 3 – Mate, Cinnamon
Use Windows Builder from Google to create GUIs in Java quickly
If you use Eclipse to create Java programs, you would know that there are several plugins that enable Eclipse to do magic. However, the Google Windows Builder plugin available from the eclipse market place, almost proves it can make "coffee". Using Windows Builder, you can create GUI windows using Swing, SWT or XWT in minutes. … Continue reading Use Windows Builder from Google to create GUIs in Java quickly
Install XFCE or LXDE as alternate desktops
It takes some time to get used to a new desktop environment, like Gnome 3. To help you get time to use the Gnome 3 graphical user interface (GUI), you can install the XFCE or LXDE desktop environments as alternatives: To install XFCE: # yum groupinstall xfce <enter> To install LXDE: # yum groupinstall lxde … Continue reading Install XFCE or LXDE as alternate desktops
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