2. Java Language Basics - Variables
• 4 things about a variables
• Name … Naming rules and conventions
• Type
• Size .. Bytes it consume in main memory
• Value .. Default value and literals
• Variable types in Java
• Primitive Types
• Reference Types
3. Primitive and Reference Types
• Primitive Types
• Basic variable types provided by Java languages
• Primitive types, literals, and ranges (of integral types)
• Reference Types
• These are usually created using primitives and other reference types
• There exist built-in reference types (Scanner, System, etc.) and we can
create our own reference types too
• Reference types are created by creating classes in Java … more details later
4.
5. Java Language Basics – Escape Sequence
• Escape Sequences:
• b (backspace)
• t (tab)
• n (line feed)
• r (carriage return)
• " (double quote)
• ' (single quote)
• (backslash)
6. Java Language Basics
• Format Specifiers
• System.print* methods
• Getting different types of input from User
