Fixed Iterator

Author: NadavMozeson

src/BehavioralPatterns/Iterator/CollegeIterator.java

@@ -33,7 +33,7 @@ public boolean isLastStudent() {
 
     @Override
     public Student currentStudent() {
-        if (index < students.size()){
+        for (; index < students.size(); index++) {
             if (students.get(index).getType().equals("College")){
                 return students.get(index);
             }

src/BehavioralPatterns/Iterator/HighSchoolIterator.java

@@ -33,7 +33,7 @@ public boolean isLastStudent() {
 
     @Override
     public Student currentStudent() {
-        if (index < students.size()){
+        for (; index < students.size(); index++) {
             if (students.get(index).getType().equals("High School")){
                 return students.get(index);
             }

src/BehavioralPatterns/Iterator/Main.java

@@ -8,12 +8,15 @@ public static void main(String[] args){
         school.addStudent(new Student("Tom", "High School"));
         school.addStudent(new Student("Jack", "High School"));
         school.addStudent(new Student("Maor", "College"));
+
         Iterator highSchoolIterator = school.createIterator("High School");
-        System.out.println("First Student: " + highSchoolIterator.currentStudent().getName());
+        System.out.println("First High School Student: " + highSchoolIterator.currentStudent().getName());
         while (!highSchoolIterator.isLastStudent()){
             System.out.println("High School Student: " + highSchoolIterator.nextStudent().getName());
         }
+
         Iterator collegeIterator = school.createIterator("College");
+        System.out.println("First College Student: " + collegeIterator.currentStudent().getName());
         while (!collegeIterator.isLastStudent()){
             System.out.println("College Student: " + collegeIterator.nextStudent().getName());
         }

src/BehavioralPatterns/Iterator/School.java

@@ -6,11 +6,11 @@
 public class School {
     private List<Student> students = new ArrayList<>();
 
-    public List<Student> getStudents(){return students;}
+    public List<Student> getStudents(){ return students; }
 
-    public void addStudent(Student student){students.add(student);}
+    public void addStudent(Student student){ students.add(student); }
 
-    public void removeStudent(Student student){students.remove(student);}
+    public void removeStudent(Student student){ students.remove(student); }
 
     public Iterator createIterator(String type) {
         if (type.equals("High School")){

src/BehavioralPatterns/Memento/Main.java

@@ -12,14 +12,14 @@ public static void main(String[] args) {
         memento = originator.createMemento();
         caretaker.addMemento(memento);
         originator.setState("Elephant");
-        System.out .println("Originator Current State: " + originator.getState());
+        System.out.println("Originator Current State: " + originator.getState());
         System.out.println("Originator restoring to previous state...");
         memento = caretaker.getMemento(1);
         originator.setMemento(memento);
-        System.out .println("Originator Current State: " + originator.getState());
+        System.out.println("Originator Current State: " + originator.getState());
         System.out.println("Again restoring to previous state...");
         memento = caretaker.getMemento(0);
         originator.setMemento(memento);
-        System.out .println("Originator Current State: " + originator.getState());
+        System.out.println("Originator Current State: " + originator.getState());
     }
 }

src/BehavioralPatterns/StateDP/AlertStateContext.java

@@ -0,0 +1,11 @@
+package BehavioralPatterns.StateDP;
+
+public class AlertStateContext {
+    private MobileAlertState currentState;
+    public AlertStateContext() {
+        currentState = new Vibration(); }
+    public void setState(MobileAlertState state) {
+        currentState = state; }
+    public void alert() { currentState.alert(this); }
+}
+

src/BehavioralPatterns/StateDP/Main.java

@@ -0,0 +1,13 @@
+package BehavioralPatterns.StateDP;
+
+public class Main {
+    public static void main(String[] args){
+        AlertStateContext stateContext = new AlertStateContext();
+        stateContext.alert();
+        stateContext.alert();
+        stateContext.setState(new Silent());
+        stateContext.alert();
+        stateContext.alert();
+        stateContext.alert();
+    }
+}

src/BehavioralPatterns/StateDP/MobileAlertState.java

@@ -0,0 +1,5 @@
+package BehavioralPatterns.StateDP;
+
+public interface MobileAlertState {
+    void alert(AlertStateContext ctx);
+}

src/BehavioralPatterns/StateDP/Silent.java

@@ -0,0 +1,8 @@
+package BehavioralPatterns.StateDP;
+
+public class Silent implements MobileAlertState{
+    @Override
+    public void alert(AlertStateContext ctx) {
+        System.out.println("silent...");
+    }
+}

src/BehavioralPatterns/StateDP/Vibration.java

@@ -0,0 +1,8 @@
+package BehavioralPatterns.StateDP;
+
+public class Vibration implements MobileAlertState{
+    @Override
+    public void alert(AlertStateContext ctx) {
+        System.out.println("vibration...");
+    }
+}