diff --git a/Human.java b/Human.java
new file mode 100644
index 0000000..f78841b
--- /dev/null
+++ b/Human.java
@@ -0,0 +1,21 @@
+package exercise1;
+
+public abstract class Human {
+    private String fullName;
+
+    public String getFullName() {
+        return fullName;
+    }
+
+    public void setFullName(String fullName) {
+        this.fullName = fullName;
+    }
+
+    public void sayMyName() {
+        System.out.println("I'm a human!");
+    }
+
+    public final void staticPrint() {
+        System.out.println("This function should always print this string in all subclasses");
+    }
+}
diff --git a/Professor.java b/Professor.java
new file mode 100644
index 0000000..8f33cd8
--- /dev/null
+++ b/Professor.java
@@ -0,0 +1,35 @@
+package exercise1;
+
+public class Professor extends Human {
+    private String professorSpecialty;
+    private String professorFaculty;
+    private int numberOfCourses;
+
+    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;
+    }
+
+    public void sayMyName() {
+        System.out.println("Full Name: " + getFullName() + ", Faculty: " + getProfessorFaculty());
+    }
+}
diff --git a/main.java b/main.java
new file mode 100644
index 0000000..de8e38a
--- /dev/null
+++ b/main.java
@@ -0,0 +1,36 @@
+package exercise1;
+
+public class Professor extends Human {
+    private String professorSpecialty;
+    private String professorFaculty;
+    private int numberOfCourses;
+
+    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("Full Name: " + getFullName() + ", Faculty: " + getProfessorFaculty());
+    }
+}
diff --git a/student.java b/student.java
new file mode 100644
index 0000000..d335c54
--- /dev/null
+++ b/student.java
@@ -0,0 +1,36 @@
+package exercise1;
+
+public class Student extends Human {
+    private String studentNumber;
+    private String majorName;
+    private String universityName;
+
+    public String getStudentNumber() {
+        return studentNumber;
+    }
+
+    public void setStudentNumber(String 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;
+    }
+
+    
+    public void sayMyName() {
+        System.out.println("Full Name: " + getFullName());
+    }
+}
diff --git a/tozihhat.java b/tozihhat.java
new file mode 100644
index 0000000..a82db9f
--- /dev/null
+++ b/tozihhat.java
@@ -0,0 +1,6 @@
+
+/*
+هر دو کلاس Student و Professor از کلاس Human ارث‌بری می‌کنند و به این ترتیب توانایی استفاده از ویژگی‌ها و روش‌های ارث‌بری شده را دارند.
+با این حال، خروجی‌هایی که از متدهای sayMyName برای نمونه‌های Student و Professor دریافت می‌شود نشان می‌دهد که مقادیر fullName و professorFaculty
+برای آنها مقداردهی نشده است، به همین دلیل خروجی این مقادیر به صورت null است.
+*/
\ No newline at end of file