new changes

src/main/java/io/zipcoder/crudapp/Person.java

     @GeneratedValue(strategy = GenerationType.AUTO)
     private String firstName;
     private String lastName;
-    private Integer idNumber;
+    private Integer id;
 
 
     public Person() {
 
     public String getFirstName() {
 
-        return firstName;
+        return this.firstName;
     }
 
     public void setFirstName(String firstName) {
 
     public String getLastName() {
 
-        return lastName;
+        return this.lastName;
     }
 
     public void setLastName(String lastName) {
         this.lastName = lastName;
     }
 
-    public Integer getIdNumber() {
+    public Integer getId() {
 
-        return idNumber;
+        return this.id;
     }
 
-    public void setIdNumber(Integer idNumber) {
+    public void setId(Integer id) {
 
-        this.idNumber = idNumber;
+        this.id = id;
     }
 }
 

src/main/java/io/zipcoder/crudapp/PersonController.java

     }
 
     @RequestMapping(value = "/people/{id}", method = RequestMethod.PUT)
-    public ResponseEntity<Person> updatePerson(@PathVariable Integer id,@RequestBody Person updatedPerson) {
+    public ResponseEntity<Person> updatePerson(@PathVariable Integer id, @RequestBody Person updatedPerson) {
 
         Person p = personRepository.findOne(id);
 
             return new ResponseEntity<>(updatedPerson, HttpStatus.OK);
         }
 
-        updatedPerson.setIdNumber(id);
+        updatedPerson.setId(id);
 
         personRepository.save(updatedPerson);