encapculatoin

1. 
   

   //her out put is null because we are not assigne value of string and intigers

   class student {

       int age;

       String name;

   
   

       public void show () {

            System.out.println( name +" " +age );

       }

   }

   
   

   public class encapsulation {

       public static void main(String[] args) {

           student obj = new student();

           obj.show();

   
   
   

          

       }

   }
    
2. // here we are  get access methode creating new methode and privet ketword use for hide your data

   class student {

        private int age;

        private String name;

   
   

       public void setdata (){

           age = 19;

           name = "rakesh";

       }

   
   

       public void show () {

            System.out.println( name +" " +age );

       }

   }

   
   

   public class encapsulation1 {

       public static void main(String[] args) {

           student obj = new student();

           obj.setdata();

           obj.show();

   
   
   

          

       }

   }
3. 
   
   

   class student{

   
   

       int age;

       String name;

   
   

       public void show (){

           System.out.println(name + " " + age );

       }

       public void setdata1( int a ){

           age = a;

   
   

       }

         public void setdata2( String b ){

          name = b;

   
   

       }

   }

   
   
   

   public class encapculation2 {

       public static void main(String[] args) {

           student obj = new student();

           obj.setdata1(18);

           obj.setdata2("rakesh");

           obj.show();

      

          

       }

      

   }
4. 
   

   //if both variable and instance variable have same inside the

   //methode then it would result in same-class adn jvm he always give perfrance in

   //local variable this appraoch is called the "shadowing problem"

   
   

   class student{

   
   

       int age;

       String name;

   
   

       public void show (){

           System.out.println(name + " " + age );

       }

       public void setdata1( int age ){

           //age = age;

           //here

   
   

       }

         public void setdata2( String name ){

          //name = name;

          //here

   
   

       }

   }

   
   
   

   public class encapculation3 {

       public static void main(String[] args) {

           student obj = new student();

           obj.setdata1(18);

           obj.setdata2("rakesh");

           obj.show();

      

          

       }

      

   }

   
   

   //programme will be work but is not a right way for write a programme
5. 
   

   //shadowing problem solve using "this." methode

   
   

   class student{

   
   

       int age;

       String name;

   
   

       public void show (){

           System.out.println(name + " " + age );

       }

       public void setdata1( int age ){

           this.age = age;

        

   
   

       }

         public void setdata2( String name ){

          this.name = name;

        

   
   

       }

   }

   
   
   

   public class encapculaton4 {

       public static void main(String[] args) {

           student obj = new student();

           student obj1 = new student();

           obj1.setdata1(18);

           obj.setdata1(22);

           obj.setdata2("Amit");

           obj1.setdata2("rakesh");

           obj1.show();

          

           obj.show();

      

          

       }

      

   }
6. //how to use getters and setters

   
   
   

   class student {

       int age;

       String Name;

       public void show (){

           System.out.println(Name +" " +age);

       }

       public void setAge(int age){

           this.age =age;

       }

       public int getAge(){

           return age;

       }

        public void setName(String Name){

           this.Name =Name;

       }

          public String getName(){

           return Name;

       }

   }

   
   
   
   

   public class encapsulaton5 {

       public static void main(String[] args) {

           student obj = new student();

           obj.setAge(25);

           obj.setName("Rahul");

          int sudent1Age = obj.getAge();

          System.out.println(sudent1Age);

          String sudent1Name = obj.getName();

          System.out.println(sudent1Name);

          

       }

   
   

    

      

   }