Iterator Pattern

Author: meowpunch

src/main/java/concurrency/reactive/Iter.java

@@ -0,0 +1,36 @@
+package concurrency.reactive;
+
+import java.util.Iterator;
+
+public class Iter {
+
+  // Iterator Pattern
+  public static void main(String[] args) {
+    Iterable<Integer> iterOneToTen = () -> new Iterator<>() {
+      int i = 0;
+      final static int MAX = 10;
+
+      @Override
+      public boolean hasNext() {
+        return i < MAX;
+      }
+
+      @Override
+      public Integer next() {
+        return ++i;
+      }
+    };
+
+    for (int i : iterOneToTen) {
+      System.out.println(i);
+    }
+
+    /*
+      Same code with this
+
+      for (var iter = iter0To10.iterator(); iter.hasNext(); ) {
+        System.out.println(iter.next());
+      }
+    */
+  }
+}