Boxing and unboxing in java

• The concept of representing the primitive data values in the form of its equivalent and corresponding wrapper class objects is known as "boxing"
  
              Integer x= new Integer(3);
             Double d= new Double(1.2);
• package com.instanceofjavaforus;
  
  public class wraperDemo3 {
  public static void main(String args[]){
            String s1="12";
          Integer i=new Integer(s1);
          System.out.println(i);
   
      }
  }
   
• The concept of getting back actual primitive data values present inside wrapper class objects into its corresponding primitive data value known as "unboxing"
        Integer x= new Integer(3);
        int y= x.intValue();
• package com.instanceofjavaforus;
  
  public class wraperDemo3 {
  
  public static void main(String args[]){
         
              String s1="12";
              Integer i=new Integer(s1);
              int x=i.intValue();
              System.out.println(x);
            }
            }
• The concept of JVM automatically representing the primitive data values in the form of its equivalent and corresponding wrapper class objects is known as "Autoboxing".
  
              Integer x=3;
             Double d= 1.3;
• package com.instanceofjavaforus;
  public class wraperDemo3 {
  public static void main(String args[]){
                
                Integer x=3;
               Double d= 1.3;
              System.out.println(x);
              System.out.println(d);
  
                }
          }
   
• The concept of getting back actual primitive data values present inside wrapper class objects into its corresponding primitive data value automatically by JVM  known as "Autounboxing"
        Integer x= new Integer(3);
        int y= x;
• package com.instanceofjavaforus;
  public class wraperDemo3 {
  public static void main(String args[]){
                
                Integer x= new Integer(3);
                   int y= x;
              System.out.println(x);
              System.out.println(y);
                }
          }