The document discusses key concepts of object-oriented programming including classes, objects, methods, encapsulation, and inheritance. It provides examples of defining classes with members, creating objects from classes, and using access specifiers. The document also covers constructors and how they are used to initialize objects when they are created.

1. OOP
Object-Oriented Programming
state
Behavior
I dentity

3. AccessSpecifier] Class Name
{
Members
}
AccessSpecifier
class
Name
Members
ClassName ObjectName;
ObjectName
new
objecyName = new ClassName([arguments])
accessSpecifier

4. static)
new
import java.util.Scanner;
public class Cal_Max {
public static void main(String args[])
{
int num1,num2;
Scanner stdin = new Scanner(System.in);
System.out.print("Input Number 1 : ");
num1 = stdin.nextInt();
System.out.print("Input Number 2 : ");
num2 = stdin.nextInt();
int larger = TestMax.max(num1,num2);
System.out.println("Max Data is "+larger);
}
}
class TestMax
{
static int max(int num1, int num2)
{
if(num1 > num2)
return num1;
else
return num2;
}
}
Scanner
max TestMax

5. Constructors
new Constructors
constructor constructure
base class (
php
class Auto_Cart extends Cart
{
function Auto_Cart() {
$this->add_item("10", 1);
}
}
?>
Constructors function
php
class Constructor_Cart extends Cart
{
function Constructor_Cart(
$item = "10", $num = 1) { $this->add_item($item, $num);
}
}
// Constructor function $default_cart = new
Constructor_Cart; // Constructor Constructor_Cart
default
error
// parameter different_cart = new Constructor_Cart("20", 17); ?>

6. Student.Java
public class Student3 {
private String name;
private String email;
public Student3()
{
name = "Unassigned";
email = "Unassigned";
}
public String getEmail(){
return email;
}
public String getName(){
return name;
}
public void setEmail(String address){
email = address;
}
public void setName(String studentName){
name = studentName;
}
}

7. - -shift
A C
B D
………………..
Y A
Z B
DIZZY” - shift FKBBA”
Teerawut message
Teerawut”
2. shift
encrypt msg
message shift
encrypt encryptedMessage
msg
encryptedMessage

8. New>Class
3. Next
4.