[W5][T09-3]Rachel Lim

docs/UserGuide.adoc

@@ -156,6 +156,13 @@ Views all details of the 1st person in the results of the `find` command.
 Clears all entries from the address book. +
 Format: `clear`
 
+== Prints out current date and time : `clock`
+Format: `clock`
+
+Example:
+
+* Date & Time now: `DAY`, `DD-MM-YYYY` at `HH:MM:SS` `AM/PM` `SGT`
+
 == Exiting the program : `exit`
 
 Exits the program. +

src/seedu/addressbook/commands/ClockCommand.java

@@ -0,0 +1,23 @@
+package seedu.addressbook.commands;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * Prints date and time at exact moment when user enters "clock" command.
+ */
+public class ClockCommand extends Command {
+    public static final String COMMAND_WORD = "clock";
+
+    public static final String MESSAGE_USAGE = COMMAND_WORD
+            + ": Prints date and time in format: day, date-month-year at hr:min:sec AM/PM timezone.\n"
+            + "Example: " + COMMAND_WORD;
+
+    @Override
+    public CommandResult execute() {
+        Date now = new Date();
+        SimpleDateFormat dateFormatter = new SimpleDateFormat("E, dd-MM-yyyy 'at' hh:mm:ss a z");
+        //System.out.println("Date & Time now: " + dateFormatter.format(now));
+        return new CommandResult("Date & Time now: " + dateFormatter.format(now));
+    }
+}