added javaDoc in Bank.java

src/ch/zhaw/catan/Bank.java

@@ -2,19 +2,39 @@ package ch.zhaw.catan;
 
 import java.util.HashMap;
 
-
+/**
+ * Bank Class that stores Resources when not being owned by a player,
+ * and the needed functions to take and give resources to it.
+ *
+ * @author Leonardo Brandenberger
+ */
 public class Bank {
     private final HashMap<Config.Resource, Integer> resources = new HashMap<>();
 
+    /**
+     * Construct a Bank Object and stores Config Values in own HashMap.
+     */
     public Bank() {
         resources.putAll(Config.INITIAL_RESOURCE_CARDS_BANK);
-
     }
 
+    /**
+     * Stores a desired resource in desired quantity in the bank.
+     *
+     * @param resource          the resource type that gets added to the bank
+     * @param numberOfResources the quantity of resources of the chosen type get added
+     */
     public void storeResourceToBank(Config.Resource resource, int numberOfResources) {
         resources.put(resource, resources.get(resource) + numberOfResources);
     }
 
+    /**
+     * Checks if a Resource is available in the quantity desired. and then deducts it from the bank inventory.
+     *
+     * @param resource          the resource type that has to be deducted
+     * @param numberOfResources the quantity of the resource that gets deducted from the inventory
+     * @return true if resources available and deducted false if not enough resources are in the bank
+     */
     public boolean getResourceFromBank(Config.Resource resource, int numberOfResources) {
         if (resources.get(resource) >= numberOfResources) {
             Integer newResourceNumber = resources.get(resource) - numberOfResources;