refactoring : lazy element - collapse hierarchy

refactoring/src/main/java/com/example/refactoring/_13_loops/_33_replace_loop_with_pipeline/Author.java

@@ -1,6 +1,5 @@
 package com.example.refactoring._13_loops._33_replace_loop_with_pipeline;
 
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
 

refactoring/src/main/java/com/example/refactoring/_14_lazy_element/_34_collapse_hierarchy/Reservation.java

@@ -0,0 +1,19 @@
+package com.example.refactoring._14_lazy_element._34_collapse_hierarchy;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+public class Reservation {
+
+    private LocalDateTime startDateTime;
+
+    private LocalDateTime endDateTime;
+
+    private List<String> members;
+
+    private String owner;
+
+    private boolean paid;
+
+    private String courtNumber;
+}

refactoring/src/main/java/com/example/refactoring/_14_lazy_element/_34_collapse_hierarchy/_before/CourtReservation.java

@@ -0,0 +1,7 @@
+package com.example.refactoring._14_lazy_element._34_collapse_hierarchy._before;
+
+public class CourtReservation extends Reservation {
+
+    private String courtNumber;
+
+}

refactoring/src/main/java/com/example/refactoring/_14_lazy_element/_34_collapse_hierarchy/_before/Reservation.java

@@ -0,0 +1,18 @@
+package com.example.refactoring._14_lazy_element._34_collapse_hierarchy._before;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+public class Reservation {
+
+    private LocalDateTime startDateTime;
+
+    private LocalDateTime endDateTime;
+
+    private List<String> members;
+
+    private String owner;
+
+    private boolean paid;
+
+}