adding diagrams

Java-Knight/src/main/java/org/project/entity/players/Player.java

@@ -36,7 +36,7 @@ public abstract class Player {
 
     @Override
     public void takeDamage(int damage) {
-        hp -= damage - armor.getDefense();
+        hp -= damage - armor.GetDefense();
     }
 
     @Override

Java-Knight/src/main/java/org/project/util/DisplayItem.java

@@ -0,0 +1,4 @@
+package org.project.util;
+
+public class DisplayItem {
+}