The document describes Java constructors, which are special methods for initializing objects by setting their initial state. It explains two types of constructors: default constructors, which are automatically generated when no explicit constructor is defined, and parameterized constructors, which accept parameters for customized object creation. Additionally, the document outlines the advantages of using constructors, including improved code design, readability, and support for inheritance.

1. JAVA CONSTRUCTORS

2. DEFINITION
.
SYNTAX
ADVANTAGES
CONTENTS
TYPES OF
CONSTRUCTORS
EXAMPLE CODES

3. DEFINITION
A constructor is a special method within a
class that facilitates the initialization of
objects. Its primary responsibility is to set up
the initial state of an object when it is created.
Constructors have the same name as the class
they belong to and lack a return type,
distinguishing them from regular methods.

4. TYPES OF CONSTRUCTORS
1.Default Constructor
2.Parameterized Constructor

5. DEFAULT
CONSTRUCTOR
A Default constructor is a
special constructor
automatically generated by the
compiler if no constructor is
explicitly defined within a class.
This constructor is provided by
default and is responsible for
initializing the object's fields to
their default values.
SYNTAX
public class MyClass {
// Default Constructor
public MyClass() {
// Initialization code
}
}

6. OUTPUT
class Test
{
int i;
String s;
Test()
{
System.out.println("No-arg Constructor");
}
public static void main(String[] args)
{
Test t = new Test();
System.out.println("i : "+t.i);
System.out.println("s : "+t.s);
}
}
EXAMPLE CODE

7. PARAMETERIZED
CONSTRUCTOR
A Parameterized constructor is a type of
constructor that accepts parameters
during its invocation, allowing for the
initialization of object properties with
specific values , enabling more dynamic
and customized object creation
SYNTAX
public class MyClass {
// Parameterized Constructor
public MyClass(int param1, String param2)
{
// Initialization code using parameters
}
}

8. OUTPUT
EXAMPLE CODE
class Test2
{
int id;
String name;
Test2(String name , int id)
{
this.name=name;
this.id=id;
}
public static void main(String[] args)
{
Test2 s1 = new Test2("Felix" , 1409);
Test2 s2 = new Test2("Theo" , 7100);
System.out.println("NAME : "+s1.name+ " , "+"ID :
"+s1.id);
System.out.println("NAME : "+s2.name+ " , "+"ID :
"+s2.id);
}
}

9. ADVANTAGES
Using constructors in your Java programs provides
several advantages that contribute to better code
design, maintainability, and reliability. Key
advanatges include :
Object Initialization
Code Readability
Encapsulation
Support for Inheritance
Immutable Objects etc...

10. THANK YOU