Add all 23 GoF design pattern implementations

2026-07-25 10:50:29 +05:30
commit f5688a6b32
164 changed files with 4371 additions and 0 deletions
--- a/03-behavioral/iterator/BookIterator.java
+++ b/03-behavioral/iterator/BookIterator.java
@@ -0,0 +1,7 @@
+package iterator;
+
+/** Our custom Iterator interface (mirrors java.util.Iterator) */
+public interface BookIterator {
+    boolean hasNext();
+    Book next();
+}