Introduction:
Almost all software requires:
- shows the questions asked to the user
- input data with the user at runtime
- Figure 1 shows some of the computational results
- The newsletter can be done with the user interface (UI) in
text mode (or console) or in illustration mode.
Graphics Type:
- The app display shows how the app is displayed on the screen to the user. It includes the placement of menu items, buttons, and window elements. Well-designed graphics are user-friendly and intuitive, designed in a way that the user can easily understand.
- A design interface consists of one or more design windows that contain various design elements (controls) such as buttons, drop-down lists, menus, text fields, and so on.
- These user interfaces are often called GUIs, from the English for user interfaces.
Sign1:
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Sign2:
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Program with visual representation 1:
- The user can interact with multiple gestures at any given time: click a button, make a selection from a drop-down list or menu, fill in a text field, and so on.
- These behaviors are completely changeable
run of the program, with no way of knowing how the command will execute when writing the code.
Swing or Awt?
Swing is based on AWT:
- but Swing != AWT!
- JButton != Button
- All AWT components have their equivalent in Swing
- prettier
- with more features
- Swing offers many components that don't exist in AWT
Swing and AWT:
- The swing is heavier and slower than the AWT.
- However, it is strongly encouraged that to use the Swing object.
- Great package
- AWT: java.awt and java.awt.events
- Swing: javax.swing, javax.swing.object
Wooden swing:
sign:
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Java GUI Types 1:
- In a graph model, we have three levels of graph representations:
- High level
- Window Title
- JFrame, JApplet, JTalk, JWindow
Conceptual engineer I G is java:
Import brand (class)
- Classes are grouped
- package import = import all classes from package
- import javax.swing.*;
- Create a drawing window (JFrame,
- Define parameters (size,
- Tell
- Difference: with AWT
- import java.awt.*; class in awt
- import java.awt.object.*; class at the party
Higher level-High level-
- Swing offers three high-quality products:
- JFrame, JTalk, and Japlet
- A graphics application must have a top-level object as the root object (the object that contains all other objects).
- The top-level object has a property pane that contains all the visible properties of the top-level object.
- The top level item may contain a menu bar.
JFrame1:
import javax.swing.*;
public class essai {
public static void main(String argv[]) {
JFrame f =
new JFrame("ma fenetre");
f.setSize(300,400);
f.setVisible(true);
}
}
JFrame2:
import javax.swing.JFrame;
public class fenetre extends JFrame {
public fenetre() {
super("Une fenêtre");
setSize(300,200);
//pack(); ** rendre la fenêtre compactée**
setVisible(true);
}
public static void main(String[] args) {
JFrame fenetre 1 = new fenetre();
JFrame fenetre 2 = new fenetre();
fenetre 2 . setSize(700,200);
Intermediate step:
- An intermediate container is used to create a graph application.
- Top-level objects contain objects within containers.
- A container in the middle can contain other containers in the middle.
- Swing provides several intermediate containers:
- JPanel
- JScroll Pane
- JPogo Panel
- JPane with Tab
- Toolbar
Panel 1:
- The JPanel is the most neutral intermediate container.
- You can only choose the background color.
- Some JPanel methods:
- public JPanel();
- public Component add(Component comp);
- public voidsetLayout(LayoutManagerlm);
- JPanel
Panel 2:
.png)
Listener :
- Dans le contexte des représentations abstraites (Swing, AWT, etc.), l'audience permet au programmeur d'effectuer des actions (clics de souris, frappes au clavier, etc.).
Les audiences sont interactives. Ces outils offrent une ou plusieurs options utilisables différemment selon les circonstances et les besoins, pour répondre aux situations.
- These audio properties are mainly present in the java.awt.event component, but they are also present in the javax.swing.event component. Each listener has an Event class associated with it. This class declares java.awt.event.Event and provides a description of the captured event. For example, the Events class represents the events captured by the event listener.
Listener Example:
public class test extends JPanel {
public Test () {
JButton = new JButton("Click here");
button.add ServiceListener(new ButtonListener());
add(button);
}
}
ListenButton class uses ActivityTin {
public freedom
action executed (event action) {
System. out.print("click");
}
}
Team Listener :
click the button…
The Changing Listener: change d un the judge ...
- Attentive listener : attentive
- Hearer of things: case à teacher, listen
Great listener: great touch
- Mouse listener: click souris
- Mousewalk listener: bad landslide
- Window Hearings will take place ...
è Object listener: leaving objects ...
- Container listener: configuration
- Word listener: translation
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التسميات
Listener