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lab4/Sequence.java

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+import java.util.Iterator;
+
+public class Sequence<E> {
+
+    private int count = 0;
+
+    private E[] element = (E[]) new Object[10];
+
+    public Sequence() {
+        element[0] = (E) "1";
+        element[1] = (E) "2";
+        element[2] = (E) "3";
+    }
+
+    public Iterator<E> getElements() {
+        return new Iterator<E>() {
+            public boolean hasNext() {
+                return count < element.length;
+            }
+
+            public E next() {
+                return element[count++];
+            }
+
+            public void remove() {
+                throw new UnsupportedOperationException();
+            }
+        };
+    }
+
+    public static void main(String[] args) {
+
+        Sequence client1 = new Sequence();
+        Sequence client2 = new Sequence();
+        Sequence client3 = new Sequence();
+
+        System.out.println("Client 1: " + client1.getElements().next());
+        System.out.println("Client 2: " + client2.getElements().next());
+        System.out.println("Client 2: " + client2.getElements().next());
+        System.out.println("Client 3: " + client3.getElements().next());
+        System.out.println("Client 3: " + client3.getElements().next());
+        System.out.println("Client 3: " + client3.getElements().next());
+    }
+}