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Add time zone information for the entered and the current local date and time values
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-11
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2 files changed

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‎datetime-jsp/datetime.html‎

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Original file line numberDiff line numberDiff line change
@@ -2,6 +2,7 @@
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<head>
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<title>Get date and time in all supported formats in Java</title>
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<h1>Enter date and time values</h1>
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</head>
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<body>

‎datetime.java‎

Lines changed: 43 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,8 @@
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import java.time.Instant;
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import java.time.LocalDateTime;
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import java.time.ZoneId;
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import java.time.ZoneOffset;
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import java.time.ZonedDateTime;
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import java.time.format.DateTimeFormatter;
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import java.util.Scanner;
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@@ -30,7 +32,7 @@ public static void main(String[] args) {
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// GregorianCalendar object to
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// LocalDateTime object named
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// enteredDateAndTime without time
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// zone information
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// zone
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DateTimeFormatter era1 = DateTimeFormatter.ofPattern("GGG"); // Format the date and time values with specified
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// pattern
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DateTimeFormatter era2 = DateTimeFormatter.ofPattern("GGGG");
@@ -71,13 +73,23 @@ public static void main(String[] args) {
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DateTimeFormatter millisecondOfDay = DateTimeFormatter.ofPattern("A");
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DateTimeFormatter nanosecondOfSecond = DateTimeFormatter.ofPattern("n");
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DateTimeFormatter nanosecondOfDay = DateTimeFormatter.ofPattern("N");
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DateTimeFormatter timezoneId2 = DateTimeFormatter.ofPattern("VV");
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DateTimeFormatter timezoneId = DateTimeFormatter.ofPattern("VV");
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DateTimeFormatter timezoneName = DateTimeFormatter.ofPattern("z");
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DateTimeFormatter timezoneName2 = DateTimeFormatter.ofPattern("zz");
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DateTimeFormatter timezoneName2 = DateTimeFormatter.ofPattern("zzzz");
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DateTimeFormatter timezoneOffset = DateTimeFormatter.ofPattern("OOOO");
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DateTimeFormatter timezoneOffsetZ = DateTimeFormatter.ofPattern("XXXXX");
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DateTimeFormatter timezoneOffsetX = DateTimeFormatter.ofPattern("xxxxx");
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DateTimeFormatter timezoneOffset2 = DateTimeFormatter.ofPattern("ZZZZZ");
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DateTimeFormatter timezoneOffsetZ1 = DateTimeFormatter.ofPattern("ZZZZ");
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ZonedDateTime enteredDateAndTimeTimezone = ZonedDateTime.of(enteredDateAndTime, ZoneId.systemDefault());// Get
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// time
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// zone
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// of
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// entered
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// date
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// and
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// time
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// values
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System.out.println("Era: " + era1.format(enteredDateAndTime) + " (" + era2.format(enteredDateAndTime) + ")"
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+ " (" + era3.format(enteredDateAndTime) + ")"); // Print the date and time values with formatted date
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// and time pattern
@@ -112,22 +124,31 @@ public static void main(String[] args) {
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System.out.println("Millisecond of Day: " + millisecondOfDay.format(enteredDateAndTime));
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System.out.println("Nanosecond: " + nanosecondOfSecond.format(enteredDateAndTime));
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System.out.println("Nanosecond of Day: " + nanosecondOfDay.format(enteredDateAndTime));
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LocalDateTime dateAndTimeNow = LocalDateTime.now(); // Get the current date and time based on local computer
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// date and time
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System.out.println("Time Zone ID: " + timezoneId.format(enteredDateAndTimeTimezone));
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System.out.println("Time Zone: " + timezoneName2.format(enteredDateAndTimeTimezone) + " ("
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+ timezoneName.format(enteredDateAndTimeTimezone) + ")");
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System.out.println("Localized Time Zone Offset: " + timezoneOffset.format(enteredDateAndTimeTimezone) + " ("
131+
+ timezoneOffset2.format(enteredDateAndTimeTimezone) + ")");
132+
System.out.println("Time Zone Offset: " + timezoneOffsetZ.format(enteredDateAndTimeTimezone) + " ("
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+ timezoneOffsetX.format(enteredDateAndTimeTimezone) + ")" + " ("
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+ timezoneOffsetZ1.format(enteredDateAndTimeTimezone) + ")");
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ZonedDateTime dateAndTimeNow = ZonedDateTime.now(); // Get the current date and time based on local computer
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// date and time with local time zone
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System.out.println("Current Era: " + era1.format(dateAndTimeNow) + " (" + era2.format(dateAndTimeNow) + ")"
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+ " (" + era3.format(dateAndTimeNow) + ")"); // Print the formatted date and time values in current
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// local date and time
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System.out.println("Current Year: " + year1.format(dateAndTimeNow) + " (" + year2.format(dateAndTimeNow) + ")");
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System.out.println(
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"Current Era Year: " + yearEra.format(dateAndTimeNow) + " (" + yearEra2.format(dateAndTimeNow) + ")");
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System.out.println("Current Day of Year: " + dayOfYear.format(dateAndTimeNow));
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System.out.println("Month of Year: " + monthOfYear.format(dateAndTimeNow) + " ("
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System.out.println("Current Month of Year: " + monthOfYear.format(dateAndTimeNow) + " ("
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+ monthOfYear2.format(dateAndTimeNow) + ")" + " (" + monthOfYear3.format(dateAndTimeNow) + ")" + " ("
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+ monthOfYear4.format(dateAndTimeNow) + ")");
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System.out.println("Current Day of Month: " + dayOfMonth.format(dateAndTimeNow));
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System.out.println("Current Quarter: " + quarter.format(dateAndTimeNow) + " (" + quarter2.format(dateAndTimeNow)
129150
+ ")" + " (" + quarter3.format(dateAndTimeNow) + ")");
130-
System.out.println("ISO Week-based Year: " + weekBasedYear.format(dateAndTimeNow) + " ("
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System.out.println("Current ISO Week-based Year: " + weekBasedYear.format(dateAndTimeNow) + " ("
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+ weekBasedYear2.format(dateAndTimeNow) + ")");
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System.out.println("Current Week of Year: " + weekOfYear.format(dateAndTimeNow));
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System.out.println("Current Week of Month: " + weekOfMonth.format(dateAndTimeNow));
@@ -148,8 +169,19 @@ public static void main(String[] args) {
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System.out.println("Current Millisecond of Day: " + millisecondOfDay.format(dateAndTimeNow));
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System.out.println("Current Nanosecond: " + nanosecondOfSecond.format(dateAndTimeNow));
150171
System.out.println("Current Nanosecond of Day: " + nanosecondOfDay.format(dateAndTimeNow));
151-
Instant currentUtcDateAndTime = Instant.now();
152-
LocalDateTime utcDateAndTimeNow = LocalDateTime.ofInstant(currentUtcDateAndTime, ZoneOffset.UTC);
172+
System.out.println("Current Time Zone ID: " + timezoneId.format(dateAndTimeNow));
173+
System.out.println("Current Time Zone: " + timezoneName2.format(dateAndTimeNow) + " ("
174+
+ timezoneName.format(dateAndTimeNow) + ")");
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System.out.println("Current Localized Time Zone Offset: " + timezoneOffset.format(dateAndTimeNow) + " ("
176+
+ timezoneOffset2.format(dateAndTimeNow) + ")");
177+
System.out.println("Current Time Zone Offset: " + timezoneOffsetZ.format(dateAndTimeNow) + " ("
178+
+ timezoneOffsetX.format(dateAndTimeNow) + ")" + " (" + timezoneOffsetZ1.format(dateAndTimeNow) + ")");
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Instant currentUtcDateAndTime = Instant.now();// Get the current UTC date and time using Instant object
180+
LocalDateTime utcDateAndTimeNow = LocalDateTime.ofInstant(currentUtcDateAndTime, ZoneOffset.UTC);// Convert from
181+
// Instant
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// object to
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// LocalDateTime
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// object
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System.out.println("Current UTC Era: " + era1.format(utcDateAndTimeNow) + " (" + era2.format(utcDateAndTimeNow)
154186
+ ")" + " (" + era3.format(utcDateAndTimeNow) + ")"); // Print the formatted date and time values in
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// current local date and time
@@ -158,13 +190,13 @@ public static void main(String[] args) {
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System.out.println("Current UTC Era Year: " + yearEra.format(utcDateAndTimeNow) + " ("
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+ yearEra2.format(utcDateAndTimeNow) + ")");
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System.out.println("Current UTC Day of Year: " + dayOfYear.format(utcDateAndTimeNow));
161-
System.out.println("Month of Year: " + monthOfYear.format(utcDateAndTimeNow) + " ("
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System.out.println("Current UTC Month of Year: " + monthOfYear.format(utcDateAndTimeNow) + " ("
162194
+ monthOfYear2.format(utcDateAndTimeNow) + ")" + " (" + monthOfYear3.format(utcDateAndTimeNow) + ")"
163195
+ " (" + monthOfYear4.format(utcDateAndTimeNow) + ")");
164196
System.out.println("Current UTC Day of Month: " + dayOfMonth.format(utcDateAndTimeNow));
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System.out.println("Current UTC Quarter: " + quarter.format(utcDateAndTimeNow) + " ("
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+ quarter2.format(utcDateAndTimeNow) + ")" + " (" + quarter3.format(utcDateAndTimeNow) + ")");
167-
System.out.println("ISO Week-based Year: " + weekBasedYear.format(utcDateAndTimeNow) + " ("
199+
System.out.println("Current UTC ISO Week-based Year: " + weekBasedYear.format(utcDateAndTimeNow) + " ("
168200
+ weekBasedYear2.format(utcDateAndTimeNow) + ")");
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System.out.println("Current UTC Week of Year: " + weekOfYear.format(utcDateAndTimeNow));
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System.out.println("Current UTC Week of Month: " + weekOfMonth.format(utcDateAndTimeNow));

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