JCheckBox JRadioButton: The Swing GUI components contain three types of state button s— JToggleButton, JCheckBox and JRadioButton — that have on/off (or true/false) values. JToggleButtons are frequently used with toolbars (sets of small buttons typically located on a bar across the top of a window). Classes JCheckBox and JRadioButton are subclasses of JToggleButton. Following is …
In the following program, user name and password are taken from user using JTextField and JPasswordField. import javax.swing.*; // for JTextField, JPasswordField, ImageIcon etc. import java.awt.*; // for Container class import java.awt.event.* ; // ActionEvent, ActionListener public class TextAndPassValidation extends JFrame implements ActionListener { JTextField tf1, tf2; JPasswordField pf ; public TextAndPassValidation( ) { super(“Learning …
JPasswordField text is implicitly encrypted which takes extra code in AWT TextField. JTextField and JPasswordField are used to take keyboard input from the user or a programmer can display some text (message) to the user. The limitation of JTextField component is it displays a single line of editable text, using a single font and a …
One of the important features of JLabel is it can be displayed as multiple lines of text with bullets, a very contrast of AWT Label which gives only one line of text. We use HTML here. Following code on JLabel Example explains. import javax.swing.* ; import java.awt.*; import java.awt.event.*; public class JLabelDemo3 extends JFrame { …
Swing Label can be set with borders and images which is not possible with AWT Label component. Alignment is also possible. Following code explains. import javax.swing.* ; import java.awt.*; import java.awt.event.*; public class JLabelDemo2 extends JFrame { public JLabelDemo2() { Container c = getContentPane(); c.setLayout(new GridLayout(3, 1, 0, 10)); // ordinary text like Label of …
JLabel Example: In many cases, JLabel is used exactly like Label of AWT as a way to display text. But with JLabel we can have an image only or image with text. JLabel is also frequently used as a way to put an image in a display. JLabel does not generate any events. The label …
JOptionPane Example: It is easy to take input using Swing. showInputDialog() method of JOptionPane displays a dialog box in which the user can enter data. The method reads the data and returns the data as a string. JOptionPane Example with user input of two numbers import javax.swing.*; public class InputDemo { public static void main(String …
JOptionPaneSwing is used to display message to the user in a window (separate dialog box). It is the easiest way of displaying message in swing. This can be used in non-gui programs also. Example on JOptionPane using showMessageDialog() method import javax.swing.*; public class JOptionPaneDemo { public static void main(String args[]) { String str = “SN …
JButton ActionListener Example Note: It is advised to read Java JFC Swing Introduction and Swing Overview before reading this. Just like AWT button, the Swing JButton also can be given event-handling. The same program of AWT button (of 8 steps) is converted into JButton. In the following program, as per the JButton clicked, the background …
JButton Images Example Note: It is advised to read Java JFC Swing Introduction and Swing Overview before reading this. A button is a component the user clicks to trigger a specific action and is very often used in GUI programming. A Java program can use several types of buttons, including command buttons, check boxes, toggle …
JButton Border Example Note: It is advised to read Java JFC Swing Introduction and Swing Overview before reading this. In the following program on JButton Border Example, special features like mnemonic(shortcut key), setting borders and images are discussed. import javax.swing.*; import java.awt.*; import java.awt.event.* ; public class JButtonDemo3 extends JFrame implements ActionListener { JButton rb, …
JButton Label Example Note: It is advised to read Java JFC Swing Introduction and Swing Overview before reading this. In the following program on JButton Label Example, the label is given different fonts and colors using HTML. import javax.swing.*; import java.awt.*; import java.awt.event.* ; public class JButtonDemo4 extends JFrame { public JButtonDemo4() { Container c …
Swing Overview: The classes used to create GUI components of the following list are part of the Swing GUI components from package javax.swing. These are the latest GUI components of the Java2 platform. Swing components (as they are commonly called) are written, manipulated and displayed completely in Java language. The following Swing Overview gives a …
Swing Introduction: JFC stands for Java Foundation Classes. It is a collection of five APIs : AWT, Accessibility, 2D API, Drag and Drop and Swing. Similar to JFC are NFC (Netscape Foundation classes) or IFC(Internet Foundation Classes, of course with different functionality). AWT API is used to display GUI components which is the original toolkit …
