The below program launch a Java Swing application; It configures a JFrame and attach a JLabel to display a hello world and center the JLabel component. Read the comment for self-explanatory. SwingHelloWorld.java package com.mkyong.swing import javax.swing.*; import java.awt.*; public class SwingHelloWorld { public static void main(String[] args) { JFrame frame = new JFrame("Hello World Java […]
The most common (and simple) way to implement a dialog in our application is the JOptionPane class. In this article we will discuss how to “overwrite” the default behaviour of JOptionPane that closes the dialog window when the user clicks a JOptionPane-created button. What we need to know before we move on to the examples […]
In this article we create an application that randomly puts shapes on a JPanel. The user can choose between the different shapes our application supports as well as the amount that will be drawn. As a design decision our application can make circles and stars. You can download the example at the end of the […]
The showOptionDialog method of JOptionPane is the Grand Unification of showConfirmDialog, showInputDialog and showMessageDialog. The showOptionDialog returns an integer which represents the position of the user’s choice in the Object[]. Note If you want to read more about the different showXxxDialog methods, refer to Java Swing – JOptionPane showConfirmDialog example Java Swing – JOptionPane showInputDialog […]
This is a review of the showConfirmDialog() method of JOptionPane Class. This method is a quick and easy way to get user input by asking a confirming question, like yes/no/cancel . The showConfirmDialog() can be called using the following combinations of parameters: Component, Object Component, Object, String, int Component, Object, String, int, int Component, Object, […]
This is a review of the showMessageDialog() method of JOptionPane Class. This method is a quick and easy way to tell the user about something that has happened . The showMessageDialog() can be called using the following combinations of parameters: Component, Object Component, Object, String, int Component, Object, String, int, Icon Component – The first […]
This is a review of the showInputDialog() method of JOptionPane Class. With this method we can prompt the user for input while customizing our dialog window. The showConfirmDialog returns either String or Object and can be called using the following combinations of parameters: Object (returns String) – Shows a question-message dialog requesting input from the […]
JFileChooser is a quick and easy way to prompt the user to choose a file or a file saving location. Below are some simple examples of how to use this class. JFileChooser has 6 constructors: JFileChooser() – empty constructor that points to user’s default directory JFileChooser(String) – uses the given path JFileChooser(File) – uses the […]
The java.awt libraries are set of classes provided by Java in order to draw shapes on a window. The abbreviation AWT stands for Abstract Windowing Toolkit. Today, the library has been converted into a huge set of classes which allows the user to create an entire GUI based application. The visual appearance of these classes […]
