OOP

OOP

1. Seperators

   • Parentheses ()
   • braces {}
   • Brackets []
   • Angle Brackets <>
   • Semicolon ;
   • Colon :
   • Comma ,
   • Period .

2. topics

   • Encoding Set
   • Primitives
   • Constants
   • Literals
   • Operators

3. alphanumeric characters

   • ASCII
     • 7 bits each character, 128 characters
       • lower case
       • upper case
       • latin letters
       • numbers
       • punctuation marks
   • ISO
     • Latin-1, 8 bits each character

4. all characters in all languages

   • Unicode
     • 16 bits , more than 65000 characters
       • UTF-8
       • UTF-32
       • UTF-16

5. Primitives

   • Eight types with specific format and size each
     • Byte
     • short
     • int
     • long
     • float
     • double
     • char
     • boolean

6. Variables

   • reference type
   • primitive type

7. Constant

   • declare by using keyword final