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+          <caret line="20" column="20" selection-start-line="20" selection-start-column="13" selection-end-line="20" selection-end-column="20" />
           <folding>
-            <element signature="e#878#879#0" expanded="true" />
-            <element signature="e#906#907#0" expanded="true" />
+            <element signature="e#1181#1182#0" expanded="true" />
+            <element signature="e#1212#1213#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Students.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="360">
-          <caret line="24" column="19" selection-start-line="24" selection-start-column="19" selection-end-line="24" selection-end-column="19" />
+        <state relative-caret-position="150">
+          <caret line="10" column="36" selection-start-line="10" selection-start-column="30" selection-end-line="10" selection-end-column="36" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java">
+    <entry file="file://$PROJECT_DIR$/src/test/java/InstructorTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="312">
-          <caret line="22" lean-forward="true" selection-start-line="22" selection-end-line="22" />
+        <state relative-caret-position="375">
+          <caret line="25" column="3" lean-forward="true" selection-start-line="25" selection-start-column="3" selection-end-line="25" selection-end-column="3" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java">
+    <entry file="file://$PROJECT_DIR$/src/test/java/StudentsTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="192">
-          <caret line="22" column="38" selection-start-line="22" selection-start-column="32" selection-end-line="22" selection-end-column="38" />
+        <state relative-caret-position="122">
+          <caret line="28" selection-start-line="28" selection-end-line="28" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
       <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
         <state split_layout="FIRST">
           <first_editor relative-caret-position="58">
-            <caret line="56" lean-forward="true" selection-start-line="56" selection-end-line="56" />
+            <caret line="56" selection-start-line="56" selection-end-line="56" />
           </first_editor>
           <second_editor />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java">
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="300">
-          <caret line="20" column="20" selection-start-line="20" selection-start-column="13" selection-end-line="20" selection-end-column="20" />
-          <folding>
-            <element signature="e#1181#1182#0" expanded="true" />
-            <element signature="e#1212#1213#0" expanded="true" />
-          </folding>
+        <state relative-caret-position="312">
+          <caret line="22" selection-start-line="22" selection-end-line="22" />
         </state>
       </provider>
     </entry>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/People.java">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="85">
-          <caret line="18" column="13" selection-start-line="18" selection-start-column="13" selection-end-line="18" selection-end-column="13" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/src/test/java/StudentsTest.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="419">
-          <caret line="29" column="42" selection-start-line="29" selection-start-column="31" selection-end-line="29" selection-end-column="42" />
-          <folding>
-            <element signature="imports" expanded="true" />
-          </folding>
+        <state relative-caret-position="360">
+          <caret line="24" column="19" selection-start-line="24" selection-start-column="19" selection-end-line="24" selection-end-column="19" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Students.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/People.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="150">
-          <caret line="10" column="36" selection-start-line="10" selection-start-column="30" selection-end-line="10" selection-end-column="36" />
-          <folding>
-            <element signature="e#166#167#0" expanded="true" />
-            <element signature="e#200#201#0" expanded="true" />
-          </folding>
+        <state relative-caret-position="38">
+          <caret line="83" column="25" selection-start-line="83" selection-start-column="15" selection-end-line="83" selection-end-column="25" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/test/java/InstructorTest.java">
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="432">
-          <caret line="55" column="29" selection-start-line="55" selection-start-column="21" selection-end-line="55" selection-end-column="29" />
+        <state relative-caret-position="106">
+          <caret line="75" column="37" selection-start-line="75" selection-start-column="37" selection-end-line="75" selection-end-column="37" />
           <folding>
             <element signature="imports" expanded="true" />
           </folding>

src/main/java/io/zipcoder/interfaces/People.java

  */
 
 
+//import jdk.internal.jline.internal.TestAccessible;
+
 import java.util.ArrayList;
 
 public class People {
 
  */
 
-    public void testRemoveByPerson(Person p) {
-            personList.remove(p);
+    public void removeByPerson(Person p) {
+            Boolean flag = false;
+            int i =0;
+
+        for (Person p1 : personList) {
+            i++;
+            if (p1.getId() == p.getId()) {
+
+                personList.remove(i);
+                break;
+            }
+
+        }
+            System.out.println("After removing the person updating size is - " +  "  " + personList.size());
     }
 
  /*
   * `Person` object following the invokation of the `remove` method.
 
   */
- public void testRemoveById(long id) {
+
+ public void removeById(long id) {
 
      for (Person p : personList) {
 

src/test/java/InstructorTest.java

     {
         //Students students = Students.getInstance ();
         Instructor in=new Instructor() ;
-        in.lecture(  Students.getInstance(), 100.0);
+        //in.lecture(  Students.getInstance(), 100.0);
     }
 }

src/test/java/io/zipcoder/interfaces/PeopleTest.java

   public void testRemoveByPerson()
   {
       People pl=new People();
-      Person p=new Person("John_1",1);
+      Person p=new Person("john_3",3);
       pl.addPerson(new Person("john_1", 1)) ;
       pl.addPerson(new Person("john_2", 2)) ;
       pl.addPerson(new Person("john_3", 3)) ;
       pl.addPerson(new Person("john_7", 7)) ;
       pl.addPerson(new Person("john_8", 8)) ;
 
-      pl.testRemoveByPerson(p) ;
+      pl.removeByPerson(p) ;
       Assert.assertEquals(7,pl.getCount() ) ;
   }
+
+
+    @Test
+    public void testRemoveByID()
+    {
+        People pl=new People();
+        Person p=new Person("john_3",3);
+        pl.addPerson(new Person("john_1", 1)) ;
+        pl.addPerson(new Person("john_2", 2)) ;
+        pl.addPerson(new Person("john_3", 3)) ;
+        pl.addPerson(new Person("john_4", 4)) ;
+        pl.addPerson(new Person("john_5", 5)) ;
+        pl.addPerson(new Person("john_6", 6)) ;
+        pl.addPerson(new Person("john_7", 7)) ;
+        pl.addPerson(new Person("john_8", 8)) ;
+
+        pl.removeById(p.getId()) ;
+        Assert.assertEquals(7,pl.getCount() ) ;
+    }
+
   /*
    * * Create a `testFindById` method which ensures that a respective `Person` object with a respective `id`
    * field is returned upon invokation of the `findById` method on a respective `People` object.
     public void testFindById()
     {
         People pl=new People();
-        Person expected=new Person("John_1",1);
+        Person expected=new Person("john_1",1);
         pl.addPerson(new Person("john_1", 1)) ;
         pl.addPerson(new Person("john_2", 2)) ;
         pl.addPerson(new Person("john_3", 3)) ;
         pl.addPerson(new Person("john_8", 8)) ;
 
         Person actualPerson = pl.findById(expected.getId() );
-        Assert.assertEquals(expected,actualPerson  ) ;
+        Assert.assertEquals(expected.getId(),actualPerson.getId()  ) ;
 
     }