Add time with milliseconds, microseconds and nanoseconds precision

Author: lulunac27a

datetime-jsp/datetime.html

@@ -18,6 +18,12 @@
     <input type="number" name="minute" id="minute" min="0" max="59" required><br>
     <label for="second">Second:</label><br>
     <input type="number" name="second" id="second" min="0" max="59" required><br>
+    <label for="millisecond">Millisecond:</label><br>
+    <input type="number" name="millisecond" id="millisecond" min="0" max="999" required value="0"><br>
+    <label for="microsecond">Microsecond:</label><br>
+    <input type="number" name="microsecond" id="microsecond" min="0" max="999" required value="0"><br>
+    <label for="nanosecond">Nanosecond:</label><br>
+    <input type="number" name="nanosecond" id="nanosecond" min="0" max="999" required value="0"><br>
     <button type="button" onclick="setCurrentDate()">Set Current Local Date and Time</button>
     <button type="button" onclick="setCurrentUtcDate()">Set Current UTC Date and Time</button>
     <input type="submit" value="Submit">

datetime-jsp/datetime.js

@@ -4,6 +4,9 @@ var day = document.querySelector("#day");
 var hour = document.querySelector("#hour");
 var minute = document.querySelector("#minute");
 var second = document.querySelector("#second");
+var millisecond = document.querySelector("#millisecond");
+var microsecond = document.querySelector("#microsecond");
+var nanosecond = document.querySelector("#nanosecond");
 function setCurrentDate() {
     var currentDate = new Date();
     var currentYear = currentDate.getFullYear();
@@ -12,12 +15,16 @@ function setCurrentDate() {
     var currentHour = currentDate.getHours();
     var currentMinute = currentDate.getMinutes();
     var currentSecond = currentDate.getSeconds();
+    var currentMillisecond = currentDate.getMilliseconds();
     year.value = currentYear;//set the input values to current local date and time
     month.value = currentMonth;
     day.value = currentDay;
     hour.value = currentHour;
     minute.value = currentMinute;
     second.value = currentSecond;
+    millisecond.value = currentMillisecond;
+    microsecond.value = 0;
+    nanosecond.value = 0;
 }
 function setCurrentUtcDate() {
     var currentDate = new Date();
@@ -27,10 +34,14 @@ function setCurrentUtcDate() {
     var currentUtcHour = currentDate.getUTCHours();
     var currentUtcMinute = currentDate.getUTCMinutes();
     var currentUtcSecond = currentDate.getUTCSeconds();
+    var currentUtcMillisecond = currentDate.getUTCMilliseconds();
     year.value = currentUtcYear;//set the input values to current UTC date and time
     month.value = currentUtcMonth;
     day.value = currentUtcDay;
     hour.value = currentUtcHour;
     minute.value = currentUtcMinute;
     second.value = currentUtcSecond;
+    millisecond.value = currentUtcMillisecond;
+    microsecond.value = 0;
+    nanosecond.value = 0;
 }

datetime-jsp/datetime.jsp

@@ -17,8 +17,11 @@ int day = Integer.parseInt(request.getParameter("day"));
 int hour = Integer.parseInt(request.getParameter("hour"));
 int minute = Integer.parseInt(request.getParameter("minute"));
 int second = Integer.parseInt(request.getParameter("second"));
+int millisecond = Integer.parseInt(request.getParameter("millisecond"));
+int microsecond = Integer.parseInt(request.getParameter("microsecond"));
+int nanosecond = Integer.parseInt(request.getParameter("nanosecond"));
 GregorianCalendar datetime = new GregorianCalendar(year, month, day, hour, minute, second); // Get the date and time values based on user entered input
-LocalDateTime dateandtime = LocalDateTime.of(year, month, day, hour, minute, second); // Convert datetime GregorianCalendar object to LocalDateTime object named dateandtime without time zone information
+LocalDateTime dateandtime = LocalDateTime.of(year, month, day, hour, minute, second).withNano(millisecond * 1000000 + microsecond * 1000 + nanosecond); // Convert datetime GregorianCalendar object to LocalDateTime object named dateandtime without time zone information
 DateTimeFormatter era1 = DateTimeFormatter.ofPattern("GGG"); // Format the date and time values with specified pattern
 DateTimeFormatter era2 = DateTimeFormatter.ofPattern("GGGG");
 DateTimeFormatter era3 = DateTimeFormatter.ofPattern("GGGGG");

datetime.java

@@ -18,6 +18,12 @@ public static void main(String[] args) {
                 int minute = sc.nextInt();
                 System.out.print("Second: ");
                 int second = sc.nextInt();
+                System.out.print("Millisecond: ");
+                int millisecond = sc.nextInt();
+                System.out.print("Microsecond: ");
+                int microsecond = sc.nextInt();
+                System.out.print("Nanosecond: ");
+                int nanosecond = sc.nextInt();
                 GregorianCalendar datetime = new GregorianCalendar(year, month, day, hour, minute, second); // Get the
                                                                                                             // date and
                                                                                                             // time
@@ -26,16 +32,16 @@ public static void main(String[] args) {
                                                                                                             // user
                                                                                                             // entered
                                                                                                             // input
-                LocalDateTime dateandtime = LocalDateTime.of(year, month, day, hour, minute, second); // Convert
-                                                                                                      // datetime of
-                                                                                                      // GregorianCalendar
-                                                                                                      // object to
-                                                                                                      // LocalDateTime
-                                                                                                      // object named
-                                                                                                      // dateandtime
-                                                                                                      // without time
-                                                                                                      // zone
-                                                                                                      // information
+                LocalDateTime dateandtime = LocalDateTime.of(year, month, day, hour, minute, second)
+                                .withNano(millisecond * 1000000 + microsecond * 1000 + nanosecond); // Convert datetime
+                                                                                                    // of
+                                                                                                    // GregorianCalendar
+                                                                                                    // object to
+                                                                                                    // LocalDateTime
+                                                                                                    // object named
+                                                                                                    // dateandtime
+                                                                                                    // without time zone
+                                                                                                    // information
                 DateTimeFormatter era1 = DateTimeFormatter.ofPattern("GGG"); // Format the date and time values with
                                                                              // specified pattern
                 DateTimeFormatter era2 = DateTimeFormatter.ofPattern("GGGG");