[dennyphilip]

u didn't specify the language !!
i am just am going to try and use java here

//we declare our class person here
class person
   {
    String first_name = new String(); //first name
    String middle_name = new String(); //middle name
    String last_name = new String(); //last name
   
   // constructor to create the object without inintialization
    person()
       {
       }
    //constructor which takes the first name middle name and last name
    person(string fname, string mname, string lname)
       {
         first_name =fname; //sets the first name
         middle_name =mname; //sets the middle name
         last_name =lname;  //sets the lastname
        }

   public void setfname(string fname)
     {
     first_name =fname; //sets the first name
     }

   public void setmname(string mname)
     {
     middle_name =mname; //sets the midddle name
     }

   public void setlname(string lname)
     {
     last_name =lname; //sets the last name
     }
  
     //method to check first name
     public void fname_check(string chk_firstname)
     {
     if (chk_firstname.equals(first_name))
        {
         System.out.println("The first name check : match")
         }
      else
        {
         System.out.println("The first name check: mismatch")
         }
    
     }

      //method to check last name
   public void lname_check(string chk_lastname)
     {
     if (chk_lastname.equals(last_name))
        {
         System.out.println("The last name check : match")
         }
      else
        {
         System.out.println("The last name check: mismatch")
         }
        }

    }

class my class // main class
   {
   public static void main(string[] args)
     {
       string s1 = "jhn" 
       string s2 = "f"
       string s3 = "knnedy"
        person person1 = new person(s1,s2,s3);
        s1 = "john";
        person1.setfname(s1); //sets the first name to john
         s2 = "Fitzgerald";
        person1.setmname(s2);  //sets the middle name
         s3 = "kennedy";
        person1.setfname(s3);  //sets the last name
        person1.fname_check(s3); //this is true
        s2 ="f";
        person1.lname_check(s2); // this is false
     }
   }

// please check the code ... i haven't checked it.. but this is one way of doing it
// and last but not least dont forget to add the import statements at the start
//as xpi0t0s said copying this wont do u good please work on it ...