With JSP program, it is very easy to get the current date and the time. You can use a simple Date object with the toString() method to print the current date and the time as follows −Example Live Demo           Display Current Date & Time   ... Read More

To create custom DateTime formatter, use DateTimeFormatter. Let us first see for Time −DateTimeFormatter dtFormat = new DateTimeFormatterBuilder() .appendValue(ChronoField.HOUR_OF_DAY) .appendLiteral(":") .appendValue(ChronoField.MINUTE_OF_HOUR) .appendLiteral(":") .appendValue(ChronoField.SECOND_OF_MINUTE) .toFormatter();For Date −dtFormat = new DateTimeFormatterBuilder() .appendValue(ChronoField.YEAR) .appendLiteral("/") .appendValue(ChronoField.MONTH_OF_YEAR) .appendLiteral("/") .appendValue(ChronoField.DAY_OF_MONTH) .toFormatter();Exampleimport java.time.LocalDateTime; import java.time.format.DateTimeFormatter; import java.time.format.DateTimeFormatterBuilder; import java.time.temporal.ChronoField; public class Demo {    public static void ... Read More

Let us first create a collection with documents −> db.likeDemo.insertOne({"Name":"John", Age:32}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb84984623186894665ae41") } > db.likeDemo.insertOne({"Name":"Chris", Age:25}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb84991623186894665ae42") } > db.likeDemo.insertOne({"Name":"Carol", Age:22}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb849a1623186894665ae43") } > db.likeDemo.insertOne({"Name":"Johnny", Age:22}); ... Read More

You can use ORDER BY ASC to order timestamp values in ascending order with TIMESTAMP() method.The following is the syntax using TIMESTAMP() −SELECT timestamp( yourTimestampColumnName ) as anyAliasName From yourTableName order by 1 ASCTo understand the above syntax, let us create a table. The query to create a table is ... Read More

To create a tuple from another collection, you need to use fromCollection() method.Let us first see what we need to work with JavaTuples. To work with Quintet class in JavaTuples, you need to import the following package −import org.javatuples.Quintet;Note − Steps to download and run JavaTuples program If you are ... Read More

It can be checked if the duration is of zero length or not using the isZero() method in the Duration class in Java. This method requires no parameters. Also, it returns true if the duration is of zero length and false otherwise.A program that demonstrates this is given as follows ... Read More

The CachedRowSet is the base implementation of disconnected row sets. It connects to the data source, reads data from it, disconnects with the data source and the processes the retrieved data, reconnects to the data source and writes the modifications.Creating a CachedRowSetYou can create a Cached RowSet object using the ... Read More

You can use aggregate framework along with $month projection operator. Let us first create a collection with documents −> db.specificMonthDemo.insertOne({"StudentName":"Larry", "StudentDateOfBirth":new ISODate('1995-01-12')}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb9a9ca8f1d1b97daf71819") } > db.specificMonthDemo.insertOne({"StudentName":"Chris", "StudentDateOfBirth":new ISODate('1999-12-31')}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cb9a9db8f1d1b97daf7181a") } > db.specificMonthDemo.insertOne({"StudentName":"David", "StudentDateOfBirth":new ISODate('2000-06-01')}); ... Read More

The equality of two durations can be determined using the equals() method in the Duration class in Java. This method requires a single parameter i.e. the duration to be compared. Also, it returns true if both the durations are equal and false otherwise.A program that demonstrates this is given as ... Read More

The contain() method is used to search a value in Septet class.Let us first see what we need to work with JavaTuples. To work with Septet class in JavaTuples, you need to import the following package −import org.javatuples.Septet;Note − Steps to download and run JavaTuples program If you are using ... Read More