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Easy Learn Java: Programming Articles, Examples and Tips - Page 435


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Version 1.5 of Advanced Swing Components is released.

Go to all tips in Swing, AWT
Advanced Swing Components (ASC Suite) are pure Java and 100% Swing-based components that help you to deliver Swing applications with professional and user-friendly interface. They are used by developers, who prefer to create own applications as fast as possible with the guarantee of high quality and outstanding performance. Advanced Swing Components were tested with all popular look and feels on JDK 1.3, JDK 1.4 and JDK 1.5.
New release contains free trial version with fully functional and open source demo application that can be used as tutorial. The following components were added and updated in the 1.5 version: JSpanTable – JTable with cell spans, JTreeTable, sorted and filtered tables, drop-down buttons, XML configurable file and font choosers, dockable toolbars and others.
Advanced Swing Components home page and trial download .

http://www.smardec.com/products/asc.html



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Posted by Anonymous on Wednesday, February 15, 2006 (21:12:13) (2516 reads)

Events -- Introduction

Go to all tips in Java Notes by Fred Swartz

Events come from User Controls

When you define a user interface, you will usually have some way to get user input. For example, buttons, menus, sliders, mouse clicks, ... all generate events when the user does something with them.

User interface event objects are passed from an event source, such as a button or mouse click, to an event listener, a user method which will process them.

Every Input Control (JButton, JSlider, ...) Needs an Event Listener

If you want a control to do something when the user alters the control, you must have a listener.

Types of Events

There are several kinds of events. The most common are:
User Control addXXXListener method in listener
JButton
JTextField
JMenuItem
addActionListener() actionPerformed(ActionEvent e)
JSlider addChangeListener() stateChanged(ChangeEvent e)
JCheckBox addItemListener() itemstateChanged()
key on component addKeyListener() keyPressed(), keyReleased(), keyTyped()
mouse on component addMouseListener() mouseClicked(), mouseEntered(), mouseExited(), mousePressed(), mouseReleased()
mouse on component addMouseMotionListener() mouseMoved(), mouseDragged()
JFrame addWindowListener() windowClosing(WindowEvent e), ...

import Statements

To use events, you must have these import statements:
import java.awt.*
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;


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Posted by jalex on Tuesday, February 14, 2006 (21:40:00) (2121 reads)

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