Hi guys. Could u anyone explaine me about getter and setter?

Question

Getter and Setter

Answer 1

Getter and Setter are two different methods that are used in OOP to Encapsulate dhe data.
What does it mean Data Encapsulation ?
Data Encapsulation means not allowing to get access in variables of your class directly or changing them.
So what we do ?
we create two methods for an attribute one to get the value of that specific attribute the other to change that value or we can leave it readonly I will demonstrate it in a single example below:

public class Hello{
\\we have two attributes
private String name;
private String lastName;

\\we are creating two constructors one will be blank and the other one will help us to intiliaze our variables (give them data);

public Hello(){}

\\we have a constructor if we want to initialize our variables or attributes
public Hello(String name,String lastName){
this.name = name;
this.lastName = lastName;
}
\\we dont want to acces directly to our methods and thats why we declared \\them private
\\Let's use getter methods to get data

public String getName(){
return name;
}
public String getLastName(){
return lastName;
}

\\We want to change the values of our variables
public void setName(String name){
this.name = name;
}

public void setLastName(String lastName){
this.lastName = lastName;
}
\\ Let's Create a String Format For Name and Last Name
public String toString(){

return " This is my String Format : "+name+" "+lastName ;
}

\\now lets create the main Class
public static void main(String [] args){
\\Now we will create a object of class Hello and we will use two setter methods \\to initialize two variables and then print those variables data
Hello hello1 = new Hello();
hello1.setName("Brat");
hello1.setLastName("Pitt");
System.out.println(hello1);
\\Now we gonna create another object and we will initialize data with \\constructor
Hello hello2 = new Hello("Angelina","Jolie");
System.out.println(hello2.getName());
System.out.println(hello2.getLastName());
}
}

Answer 2

Sorry if any brackets is missing I wrote the code in the comment here not in any editor or IDE