Develop

exercise1/Human.java

@@ -17,7 +17,8 @@ public void sayMyName() {
         System.out.println("im a human!");
     }
 
-    public void staticPrint() {
+    public final void staticPrint() {
+        //سوال1
         System.out.println("this function should always print this string in all subclasses");
     }
 }

exercise1/Main.java

@@ -13,6 +13,26 @@
 
 public class Main {
     public static void main(String[] args) {
+        //سوال 6
+        Human student=new Student();
+        Human professor=new Professor();
 
+        System.out.println(student instanceof Human); //true
+        System.out.println(professor instanceof Human); //true
+
+
+        //سوال7
+        Human human1=new Student();
+        human1.sayMyName();
+        //output:My name is  null
+
+
+        //سوال 8
+        Human human2 = new Professor();
+        human2.sayMyName();
+        /* output:
+        My name is null
+        The professorFaculty is null
+         */
     }
 }

exercise1/Professor.java

@@ -4,5 +4,40 @@
 //  4.Add the following attributes to this class with setters and getters: professorSpecialty, professorFaculty, numberOfCourse
 //  5.Change the professor class so that when we call the sayMyName() method on an instance of this class, fullName of the professor plus their professorFaculty is printed.
 
-public class Professor {
-}
+
+    public class Professor extends Human{
+        // سوال 4
+        private String professorFaculty;
+        private String professorSpecialty;
+        private int numberOfCourse;
+
+        public String getProfessorFaculty(){
+            return professorFaculty;
+        }
+        public void setProfessorFaculty(String professorFaculty){
+            this.professorFaculty=professorFaculty;
+        }
+        public String getProfessorSpecialty(){
+            return professorSpecialty;
+        }
+        public void setProfessorSpecialty(String professorSpecialty){
+            this.professorSpecialty=professorSpecialty;
+        }
+        public int getNumberOfCourse(){
+            return numberOfCourse;
+        }
+        public void setNumberOfCourse(int numberOfCourse){
+            this.numberOfCourse=numberOfCourse;
+        }
+
+
+        @Override
+        //سوال 5
+        public void sayMyName(){
+            System.out.println("My name is " + getFullName());
+            System.out.println("The professorFaculty is "+ getProfessorFaculty());
+        }
+
+    }
+
+

exercise1/Student.java

@@ -5,5 +5,37 @@
 // 2. Change the student class so that when we call the sayMyName() method on an instance of this class, the fullName attribute of the student is printed.
 // 3.Add the following attributes to the student class with setters and getters: studentNumber, majorName, universityName
 
-public class Student {
-}
+
+    public class Student extends Human{
+        // سوال 3
+        private int studentNumber;
+        private String majorName;
+        private String universityName;
+
+        public int getStudentNumber(){
+            return studentNumber;
+        }
+        public void setStudentNumber(int studentNumber){
+            this.studentNumber=studentNumber;
+        }
+        public String getMajorName(){
+            return majorName;
+        }
+        public void setMajorName(String majorName){
+            this.majorName=majorName;
+        }
+       public String getUniversityName(){
+            return universityName;
+       }
+       public void setUniversityName(String universityName){
+            this.universityName=universityName;
+       }
+
+
+        @Override
+        //سوال 2
+        public void sayMyName(){
+            System.out.println("My name is  " + getFullName());
+
+        }
+    }

exercise1/exercise1.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" packagePrefix="exercise1" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

exercise1/out/production/exercise1/exercise1/exercise1.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" packagePrefix="exercise1" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>