Fix and complete JavaDoc comments

src/main/java/it/polimi/ingsw/gc14/View/TUI/BorderStyle.java

@@ -1,8 +1,27 @@
 package it.polimi.ingsw.gc14.View.TUI;
 
+/**
+ * Defines the available border styles used to render {@link AsciiTable}
+ * instances in the text-based user interface.
+ *
+ * <p>Each style stores the characters needed to draw table corners,
+ * horizontal and vertical lines, and junctions.
+ */
 public enum BorderStyle {
+
+    /**
+     * Unicode box-drawing border style.
+     */
     UNICODE("╔","╗","╚","╝","═","║","╠","╣","╦","╩","╬","├","┤","─","┼"),
+
+    /**
+     * Plain ASCII border style.
+     */
     ASCII  ("+","+","+","+","-","|","+","+","+","+","+","+","+","-","+"),
+
+    /**
+     * Rounded Unicode border style.
+     */
     ROUNDED("╭","╮","╰","╯","─","│","├","┤","┬","┴","┼","├","┤","─","┼");
 
     private final String tl,tr,bl,br,h,v,ml,mr,mt,mb,x,sl,sr,sh,sx;
@@ -21,19 +40,78 @@ public enum BorderStyle {
         this.sh = sh; this.sx = sx;
     }
 
+    /**
+     * @return the top-left corner character.
+     */
     public String tl() { return tl; }
+
+    /**
+     * @return the top-right corner character.
+     */
     public String tr() { return tr; }
+
+    /**
+     * @return the bottom-left corner character.
+     */
     public String bl() { return bl; }
+
+    /**
+     * @return the bottom-right corner character.
+     */
     public String br() { return br; }
+
+    /**
+     * @return the horizontal line character.
+     */
     public String h()  { return h;  }
+
+    /**
+     * @return the vertical line character.
+     */
     public String v()  { return v;  }
+
+    /**
+     * @return the middle-left junction character.
+     */
     public String ml() { return ml; }
+
+    /**
+     * @return the middle-right junction character.
+     */
     public String mr() { return mr; }
+
+    /**
+     * @return the top-middle junction character.
+     */
     public String mt() { return mt; }
+
+    /**
+     * @return the bottom-middle junction character.
+     */
     public String mb() { return mb; }
+
+    /**
+     * @return the center junction character.
+     */
     public String x()  { return x;  }
+
+    /**
+     * @return the separator-left junction character.
+     */
     public String sl() { return sl; }
+
+    /**
+     * @return the separator-right junction character.
+     */
     public String sr() { return sr; }
+
+    /**
+     * @return the separator horizontal line character.
+     */
     public String sh() { return sh; }
+
+    /**
+     * @return the separator center junction character.
+     */
     public String sx() { return sx; }
 }