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JAVA API (GUI)

JAVA API (GUI). Subject : T0934 / Multimedia Programming Foundation Session : 1 Tahun : 2009 Versi : 1/0. Learning Outcomes. In the end of this session, students must be able to: recognize Java technology understand the concept of Graphics User Interfaces (GUI)

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JAVA API (GUI)

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  1. JAVA API (GUI) Subject : T0934 / Multimedia Programming Foundation Session : 1 Tahun : 2009 Versi : 1/0

  2. Learning Outcomes In the end of this session, students must be able to: • recognize Java technology • understand the concept of Graphics User Interfaces (GUI) • recognize the components and user actions of GUI • recognize Look And Feel (LAF) in Java

  3. Course Outlines • Java Technology • Graphics User Interface (GUI) • User Interface Components • User Actions (Interactions) • Java GUI • User Interface Manager (Look And Feel)

  4. Java Technology • Both a programming language and a platform • Java programming language is a high-level language that can be characterized by all of the following buzzwords: • Simple • Object Oriented • Distributed • Interpreted • Robust • Secure • Architecture Neutral • Portable • High performance • Multithreaded • Dynamic

  5. Java Technology • Software development process: • JVM (multiple platforms)

  6. Java Technology • Platform is the hardware or software environment in which a program runs. • The Java platform has two components: • The Java Virtual Machine • The Java Application Programming Interface (API) • API: Core functionality of the Java. • Classes: basic objects, networking and security, XML generation and database access, and more

  7. Graphics User Interface (GUI) • Pronounced /’ɡu:i/  “goo-ey” • Human-computer interface (way for humans to interact with computers) • Uses windows, icons and menus • Can be manipulated by a mouse • Often to a limited extent by a keyboard • Three Concepts: • Graphics (text, image, geometric figures) • User Interface Components • User Actions (Interactions)

  8. User Interface Components Title Bar Mnemonics Menu Bar Menu Items Frame (Top-level Window) Image Icon Text Field Tab Pane Check Box Combo Box Radio Button Vertical Scroll Bar Button Horizontal Scroll Bar

  9. User Actions (Interactions) • Key • Mouse • Button • Menu • Actions: • Press Key • Click Mouse • Click Button • Select Menu • Events: • Key Event • Mouse Event • Action Event • Action Event PROGRAM causes notify Listen Handle respond action User User click show click show

  10. Sample Code

  11. Sample Code

  12. Sample Code • File saved as “ComponentsSample.java” • setBounds(int x, int y, int width, int height) • See JDK Documentation as tutorial

  13. Sample Code setTitle("Components Sample"); JFrame setSize(300,200); JLabel label.setBounds(10,10,120,20); JCheckBox checkBox.setBounds(5,40,150,20); JTextField textField.setBounds(130,10,150,20); JPanel JComboBox comboBox.setBounds(160,40,120,20); JButton button.setBounds(210,80,70,20);

  14. Java GUI • Java GUI classes: • Container Classes • JFrame, JPanel, JApplet • Component Classes • JButton, JTextField, JTextArea, JComboBox, etc • Helper Classes • Graphics, Color, Font, Dimension, etc • Java GUI Components: • Abstract Windows Toolkit (AWT)  heavyweight components • Button, TextField, TextArea, ComboBox, etc • Swing  lightweight components • JButton, JTextField, JTextArea, JComboBox, etc

  15. Java GUI

  16. Java GUI

  17. Java GUI

  18. Java GUI

  19. Java GUI

  20. Java GUI • Java also has a very good system for Look and Feels (LAFs)  See Additional Material 1

  21. Java • Java can be downloaded at: http://java.sun.com/javase/downloads/index.jsp • Java Documentation (help) can be downloaded at: http://java.sun.com/javase/6/docs/api/index.html or http://java.sun.com/javase/downloads/index.jsp

  22. References • About the Java Technology. Sun Microsystems. 2008. http://java.sun.com/docs/books/tutorial/getStarted/intro/definition.html • Characteristics of Java. Liang. 2009. http://www.cs.armstrong.edu/liang/intro6e/JavaCharacteristics.pdf • The Java Language Environment. Sun Microsystems. 2009. http://java.sun.com/docs/white/langenv/Intro.doc2.html#334 • What Can Java Technology Do?. Sun Microsystems. 2009. http://java.sun.com/docs/books/tutorial/getStarted/intro/cando.html • Java Technology Concept Map. Sun Microsystems. 2009. http://java.sun.com/new2java/javamap/Java_Technology_Concept_Map.pdf • Java Technology. University of Wollongong. 2004. • GUI Definition. Linfo. 2004. http://www.linfo.org/gui.html • Graphics Programming. University of Wollongong. 2004. • Graphical User Interface. Wikipedia. 2009. http://en.wikipedia.org/wiki/Graphical_user_interface • Elements of graphical user interfaces. Wikipedia. 2009. http://en.wikipedia.org/wiki/Elements_of_graphical_user_interfaces

  23. References • java.awt.Component Hierarchy Class Diagram. Falkhausen. 2009. http://www.falkhausen.de/en/diagram/html/java.awt.Components.html • javax.swing.* Class Diagrams. Falkhausen. 2009. http://www.falkhausen.de/en/diagram/spec/javax.swing.html • Java Swing Classes. Holub. 1999. http://www.holub.com/goodies/images/swing_component_hierarchy.gif • Introduction to Java Programming. 7ed. Liang. 2009. p13. • Swing Components and Containment Hierarchy. The Hong Kong Polytechnic University. 2009. http://www.eie.polyu.edu.hk/~enzheru/gui-0405/final-ppt/java5.ppt • Java SE Downloads. Sun Microsystems. 2009. http://java.sun.com/javase/downloads/index.jsp • Java Overview (Documentation). Sun Microsystems. 2009. http://java.sun.com/javase/6/docs/api/index.html

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