Ashkan Asef

exercise1/Human.java

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

exercise1/Main.java

@@ -1,18 +1,25 @@
 package exercise1;
-
-import java.util.ArrayList;
-import java.util.List;
-
-// After completing the Student and Professor classes, create an instance of each one:
-//  6. Using instanceof keyword, check if the instances that you have created are really an instance of human class
-//  7. Write the following code: Human human = new Student(); What is the output of human.sayMyName() ?
-//  8. Now write this:
-//  Human human = new Professor();
-//  What is the output of human.sayMyName() ?
-//  9. What can we understand from question 7 and 8?
 
 public class Main {
     public static void main(String[] args) {
+        Student student = new Student();
+        Professor professor = new Professor();
+
+        if (student instanceof Human) {
+            System.out.println("student is an instance of Human");
+        }
+        else
+            System.out.println("student is not an instance of Human");
+        if (professor instanceof Human) {
+            System.out.println("professor is an instance of Human");
+        }
+        else
+            System.out.println("professor is not an instance of Human");
+
+        Human human_student = new Student("student_name", 1, "math", "beheshti");
+        Human human_professor = new Professor("professor_name", "number theory", "mathematics", 24);
 
+        human_student.sayMyName();
+        human_professor.sayMyName();
     }
 }

exercise1/Professor.java

@@ -1,8 +1,45 @@
 package exercise1;
+public class Professor extends Human {
+    private String professorSpecialty;
+    private String professorFaculty;
+    private int numberOfCourses;
 
-// Implement or extend the human class to make a professor class...
-//  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 Professor(String fullName, String professorSpecialty, String professorFaculty, int numberOfCourses) {
+        setFullName(fullName);
+        setProfessorSpecialty(professorSpecialty);
+        setProfessorFaculty(professorFaculty);
+        setNumberOfCourses(numberOfCourses);
+    }
+
+    public Professor() {
+    }
+
+    public String getProfessorSpecialty() {
+        return professorSpecialty;
+    }
+
+    public void setProfessorSpecialty(String professorSpecialty) {
+        this.professorSpecialty = professorSpecialty;
+    }
+
+    public String getProfessorFaculty() {
+        return professorFaculty;
+    }
+
+    public void setProfessorFaculty(String professorFaculty) {
+        this.professorFaculty = professorFaculty;
+    }
+
+    public int getNumberOfCourses() {
+        return numberOfCourses;
+    }
+
+    public void setNumberOfCourses(int numberOfCourses) {
+        this.numberOfCourses = numberOfCourses;
+    }
+
+    @Override
+    public void sayMyName() {
+        System.out.println(getFullName() + "-" + getProfessorFaculty());
+    }
+}

exercise1/Student.java

@@ -1,9 +1,46 @@
 package exercise1;
+public class Student extends Human {
+    private int studentNumber;
+    private String majorName;
+    private String universityName;
 
-// Human is an abstract concept, so we have created an abstract class to represent it...
-// Implement or extend the Human class to make a student class.
-// 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 Student(String fullName, int studentNumber, String majorName, String universityName) {
+        setFullName(fullName);
+        setStudentNumber(studentNumber);
+        setUniversityName(universityName);
+        setMajorName(majorName);
+    }
 
-public class Student {
+    public Student(){
+    }
+
+
+    public void setStudentNumber(int studentNumber) {
+        this.studentNumber = studentNumber;
+    }
+
+    public int getStudentNumber() {
+        return studentNumber;
+    }
+
+    public void setMajorName(String majorName) {
+        this.majorName = majorName;
+    }
+
+    public String getMajorName() {
+        return majorName;
+    }
+
+    public void setUniversityName(String universityName) {
+        this.universityName = universityName;
+    }
+
+    public String getUniversityName() {
+        return universityName;
+    }
+
+    @Override
+    public void sayMyName() {
+        System.out.println(getFullName());
+    }
 }

exercise1/answer.txt

@@ -0,0 +1,14 @@
+این نمونه ای از چندشکلی در برنامه نویسی است
+از آنجایی که هر دو کلاس زیرشاخه های کلاس
+Human
+هستند میتوان شی ای از کلاس 
+Human
+ساخت و آن را با کلاس های زیرشاخه 
+Student
+و
+Professor
+مقداردهی کرد
+
+به همین علت تابع 
+sayMyName
+مقادیر متفاوتی به ازای هر شی دارد

out/production/AP-1/.gitignore

@@ -0,0 +1,24 @@
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+replay_pid*