diff --git a/projjpn/src/main/java/de/hs_fulda/ciip/projjpn/Games.java b/projjpn/src/main/java/de/hs_fulda/ciip/projjpn/Games.java
index 38b747b..6f9df1f 100644
--- a/projjpn/src/main/java/de/hs_fulda/ciip/projjpn/Games.java
+++ b/projjpn/src/main/java/de/hs_fulda/ciip/projjpn/Games.java
@@ -306,6 +306,12 @@ public class Games {
 		return result.substring(0, result.length() - 2);
 	}
 
+	/**
+	 * Checks if the release dates are all the same across Europe, Japan, North
+	 * America and Australia.
+	 * 
+	 * @return Prints the games which have the same release dates.
+	 */
 	public String checkAllSameReleaseDates() {
 		String result = "";
 		String query = "SELECT Game_Name, Game_Release_EU, Game_Release_JP, Game_Release_NA, Game_Release_AU FROM Games";
@@ -347,6 +353,12 @@ public class Games {
 		return result.substring(0, result.length() - 2);
 	}
 
+	/**
+	 * Checks if the release dates are not all the same across Europe, Japan, North
+	 * America and Australia.
+	 * 
+	 * @return Prints the games which do not have the same release dates.
+	 */
 	public String checkAllDifferentReleaseDates() {
 		String result = "";
 		String query = "SELECT Game_Name, Game_Release_EU, Game_Release_JP, Game_Release_NA, Game_Release_AU FROM Games";
@@ -1176,6 +1188,11 @@ public class Games {
 		return result.substring(0, result.length() - 2);
 	}
 
+	/**
+	 * Checks the release dates that are unknown.
+	 * 
+	 * @return Prints the games which do not have a release date.
+	 */
 	public String checkReleaseDateUnknown() {
 		String result = "";
 		String query = "SELECT Game_Name, Game_Release_AU FROM Games";
@@ -1206,6 +1223,12 @@ public class Games {
 		return result.substring(0, result.length() - 2);
 	}
 
+	/**
+	 * Checks if the release years are all the same across Europe, Japan, North
+	 * America and Australia.
+	 * 
+	 * @return Prints the games which have the same release year.
+	 */
 	public String checkAllSameReleaseYear() {
 		String result = "";
 		String query = "SELECT Game_Name, Game_Release_EU, Game_Release_JP, Game_Release_NA, Game_Release_AU FROM Games";
@@ -1247,6 +1270,12 @@ public class Games {
 		return result.substring(0, result.length() - 2);
 	}
 
+	/**
+	 * Checks if the release year are not all the same across Europe, Japan, North
+	 * America and Australia.
+	 * 
+	 * @return Prints the games which do not have the same release year.
+	 */
 	public String checkAllDifferentReleaseYear() {
 		String result = "";
 		String query = "SELECT Game_Name, Game_Release_EU, Game_Release_JP, Game_Release_NA, Game_Release_AU FROM Games";