Assiya

src/main/java/kz/edu/nu/cs/exercise/State1.java

@@ -0,0 +1,20 @@
+package kz.edu.nu.cs.exercise;
+
+public class State1 extends State {
+
+    public State1(StateContext sc) {
+        this.sc = sc;
+        this.accept = false;
+    }
+
+    @Override
+        public void actionA(){
+            sc.setCurrentState(sc.state2);
+        }
+
+    @Override
+    public void actionB(){
+        sc.setCurrentState(sc.state1);
+    }
+
+    }

src/main/java/kz/edu/nu/cs/exercise/State2.java

@@ -0,0 +1,21 @@
+package kz.edu.nu.cs.exercise;
+
+public class State2 extends State {
+
+    public State2(StateContext sc) {
+        this.sc = sc;
+        this.accept = false;
+    }
+
+    @Override
+    public void actionA() {
+
+        sc.setCurrentState(sc.state3);
+    }
+
+    @Override
+    public void actionB() {
+
+        sc.setCurrentState(sc.state1);
+    }
+}

src/main/java/kz/edu/nu/cs/exercise/State3.java

@@ -0,0 +1,19 @@
+package kz.edu.nu.cs.exercise;
+
+public class State3 extends State {
+
+    public State3(StateContext sc) {
+        this.sc = sc;
+        this.accept = true;
+    }
+
+    @Override
+    public void actionA() {
+        sc.setCurrentState(sc.state3);
+    }
+
+    @Override
+    public void actionB() {
+        sc.setCurrentState(sc.state2);
+    }
+}

src/main/java/kz/edu/nu/cs/exercise/StateContext.java

@@ -1,33 +1,35 @@
 package kz.edu.nu.cs.exercise;
 
 public class StateContext {
-    final State state1 = new State1(this);
-    final State state2 = new State2(this);
-    final State state3 = new State3(this);
+
+    public final State state1 = new State1(this);
+    public final State state2 = new State2(this);
+    public final State state3 = new State3(this);
 
     private State currentState;
 
     public StateContext() {
+
         this.currentState = state1;
     }
 
     public void actionA() {
-        // complete this method by
-        // delegation to the current state
+        this.getCurrentState().actionA();
     }
 
     public void actionB() {
-        // complete this method
-        // delegate to the current state
+        this.getCurrentState().actionB();
+
     }
 
     public boolean inAcceptState() {
-        // complete this method and return correct value
-        // delegate to the current state
-        return false;
+
+        return this.getCurrentState().isAccept();
+
     }
 
     public State getCurrentState() {
+
         return currentState;
     }
 

src/test/java/kz/edu/nu/cs/exercise/TestStatePattern.java

@@ -1,5 +1,7 @@
 package kz.edu.nu.cs.exercise;
 
+
+
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;