1. Programming I
Packets and JAR
11th lecture

2. © Branko Kavšek, Jernej Vičič
Packets
What are packets and how do we use them?
The JAR tool
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

3. © Branko Kavšek, Jernej Vičič
Overview
Basic libraries
Packets
JAR
Swing
JavaDoc
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

4. Basic libraries JavaTM SE 6 Platform
Java Platform, Standard Edition 6 JDK.
Version 6

6. Paketi paketi (packages) so knjižnice Java objektov.
v program jih lahko uvozimo z besedo import.
Java API vsebuje veliko različnih paketov, lahko pa pakete naredimo tudi sami.
Paket je tesno povezan z imenikom datotečnega sistema
Vsi javni razredi, ki so v nekem imeniku se lahko med sabo kličejo.

7. Packets
All public classes that are in a directory can call each other.
Package behaves as a directory, all the classes of a package are friends (you can call another method, modify / read properties).
We must store all classes in the same directory at design time.
Packages can be placed in a Java JAR archive.

8. Packts - example
import java.lang.Math; // sedaj lahko uporabljamo metodi iz Math
public class Bla {
public static void main(String argv[]) {
double x=5;
System.out.println(Math.sin(x)); // kličemo
Math.sin(3.14); }

9. Packets package PrviPaket; public class Razred{
public static void main(String args[]){
System.out.println("Dober dan!"); }
} // Razred

10. Packets
Content of the example must be saved in the file Razred.java, which is located in the directory PrviPaket.
Compile file Razred.java as an ordinary Java program.
The implementation is slightly different:
java PrviPaket/Razred

11. Pakets - JAR Jar is Java Archive.
It is a file format based on the zip and is used to combine multiple files into one.
It is primarily designed to facilitate and speed up the handling of java projects. It handles (in addition to Class files) also images similar rubbish.

12. Packets - JAR Make a jar archive: jar cvf pp.jar PrviPaket/
Start a class in an archive (add to classpath):
java -classpath pp.jar PrviPaket/Razred
Executable jar files:
Open a nerw jar file.
Find file MANIFEST.MF
Add the line:
Main-Class: PrviPaket/Razred
Make a new archive:
jar cvfm pp1.jar c:\temp\MANIFEST.MF PrviPaket/
Start:
java -jar pp1.jar

13. © Branko Kavšek, Jernej Vičič
Swing – why, how, who?
Sun and allies
JFC
AWT
Java 2D
Accessibility
Drag and Drop
Swing
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

14. © Branko Kavšek, Jernej Vičič
Swing usage
Analogous to AWT components
Add the letter J
Additional componnets
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

15. © Branko Kavšek, Jernej Vičič
Swing - usage
tree = new JTree();
list = new JList(items);
button = new JButton("Pritisni");
button.addActionListener(new ButtonListener());
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

16. Swing – Differences between Swing and AWT
All components are written in Java
AWT components are only envelope
Uniform look on all platforms
Look up
Greater control over the components
Pluggable Look and Feel
Slow and greedy
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

17. © Branko Kavšek, Jernej Vičič
Swing Windows look
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

18. Swing metal (Java) look
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

19. © Branko Kavšek, Jernej Vičič
Swing Motif look
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

20. © Branko Kavšek, Jernej Vičič
Swing
Source code: SwingApplet.html
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič

21. © Branko Kavšek, Jernej Vičič
JavaDoc
Example!
11th lecture
Programming I
© Branko Kavšek, Jernej Vičič