style

src/chapter6/demo64/Player.java

@@ -9,6 +9,10 @@ public class Player {
     private String name;
     private ArrayList<Card> hand = new ArrayList<>();
 
+    /**
+     * 构造函数
+     * @param name 玩家名称
+     */
     public Player(String name) {
         this.name = name;
     }