Index: trunk/src/org/openstreetmap/josm/tools/date/DateUtils.java
===================================================================
--- trunk/src/org/openstreetmap/josm/tools/date/DateUtils.java	(revision 18012)
+++ trunk/src/org/openstreetmap/josm/tools/date/DateUtils.java	(revision 18013)
@@ -262,15 +262,4 @@
 
     /**
-     * Returns a new {@code SimpleDateFormat} for date and time, according to <a href="https://en.wikipedia.org/wiki/ISO_8601">ISO 8601</a>.
-     * @return a new ISO 8601 date format, for date and time.
-     * @since 7299
-     * @deprecated Use {@link Instant#toString()}
-     */
-    @Deprecated
-    public static SimpleDateFormat newIsoDateTimeFormat() {
-        return new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssX");
-    }
-
-    /**
      * Returns the date format to be used for current user, based on user preferences.
      * @param dateStyle The date style as described in {@link DateFormat#getDateInstance}. Ignored if "ISO dates" option is set
@@ -296,17 +285,4 @@
                 : DateTimeFormatter.ofLocalizedDate(dateStyle);
         return formatter.withZone(ZoneId.systemDefault());
-    }
-
-    /**
-     * Returns the date format used for GPX waypoints.
-     * @return the date format used for GPX waypoints
-     * @since 14055
-     * @deprecated Use {@link Instant#toString()}
-     */
-    @Deprecated
-    public static DateFormat getGpxFormat() {
-        SimpleDateFormat result = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
-        result.setTimeZone(UTC);
-        return result;
     }
 
Index: trunk/src/org/openstreetmap/josm/tools/date/Interval.java
===================================================================
--- trunk/src/org/openstreetmap/josm/tools/date/Interval.java	(revision 18012)
+++ trunk/src/org/openstreetmap/josm/tools/date/Interval.java	(revision 18013)
@@ -1,6 +1,4 @@
 // License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.tools.date;
-
-import org.openstreetmap.josm.tools.Utils;
 
 import java.time.Instant;
@@ -8,4 +6,6 @@
 import java.time.format.FormatStyle;
 import java.util.Objects;
+
+import org.openstreetmap.josm.tools.Utils;
 
 /**
@@ -17,4 +17,9 @@
     private final Instant end;
 
+    /**
+     * Constructs a new {@code Interval}
+     * @param start start instant
+     * @param end end instant
+     */
     public Interval(Instant start, Instant end) {
         this.start = start;
@@ -54,8 +59,16 @@
     }
 
+    /**
+     * Returns start instant.
+     * @return start instant
+     */
     public Instant getStart() {
         return start;
     }
 
+    /**
+     * Returns end instant.
+     * @return end instant
+     */
     public Instant getEnd() {
         return end;