Object Oriented - 1st day

Now is the time to shape your stories! Your fate is in your hands!!
- Auron, Final Fantasy X -

Morning Class - Early Rise - yeah, whatever...
1st OOP class and here's what i've got...
open it, read it, whatever....hope u got what u need....

OOP
11 february 2010

class and objects
    class -> gambaran umum akan sesuatu dengan ciri2 tertentu
        ex : students, cats
    object -> sesuatu yang lebih spesifik berdasarkan ciri2 dari class
        ex : edward, garfield

properties and method
    properties : ciri2nya, misal u/ cats -> color, weight, race
    ada 2 properties :
        - variable : berubah-ubah
        - constant : ga bisa berubah
    method : apa yang bisa dilakukan, misal u/ cats -> eat, jump, walk
    ada 2 jenis :
        - without argument/value, ex : jump()
        - with argument/value, ex : jump(5) -> jump 5 times 

inheritance
    inheritance : mekanisme OOP dimana ada 2 atau lebih entity yang beda tapi punya banyak kesamaan
    - superclass/ancestor : yang bersifat lebih umum
    - subclass/descendant : yang bersifat lebih khusus dengan sifat mirip dengan superclass

software engineering
    seperti membangun sesuatu, perlu disiplin ilmu, perlu langkah dan desain, langkah/stages nya :
    - analysis : cari gambaran umum nya
    - design : di bentuk design nya 
    - coding : programmingnya
    - testing : di tes
    - operation and maintenance : bagaimana di pakai orang lain dan perbaikan2nya

practice makes perfect
    1. open cmd prompt
    2. type "notepad HelloWorld.java" -> create new file
    3. type : 
        public class HelloWorld {
            public static void main(string[] args){
                system.out.println("I Rule !");
                system.out.println("The World !");
            }
        }
    4. save
    5. compile using "Javac HelloWorld.java"
    6. run using "Java HelloWorld"

activating java
    go to C:\Program Files\Java\jdk1.6.0_11\bin
    go to system properties(right click @ my comp)
    choose advanced
    choose environment variables
    double click path (system variables)
    add ";C:\Program Files\Java\jdk1.6.0_11\bin" at the end of variable value
    OK to the end

that's it for now...