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To select accumulated column, let us first create a demo table. The query to create a table is as follows −mysql> create table accumulatedDemo -> ( -> Value int -> ); Query OK, 0 rows affected (0.58 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into accumulatedDemo values(10); Query OK, 1 row affected (0.21 sec) mysql> insert into accumulatedDemo values(15); Query OK, 1 row affected (0.09 sec) mysql> insert into accumulatedDemo values(20); Query OK, 1 row affected (0.13 sec) mysql> insert into accumulatedDemo values(25); Query OK, 1 row affected ... Read More
This example demonstrate about How to use LocalBroadcastManagerStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code, we have taken text view to show broadcast values.Step 3 − Add the following code to src/MainActivity.java import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.PackageManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView actionEvent; ... Read More
Create an Instant and get an Instant using milliseconds passed as parameter from the epoch of 1970-01- 01T00:00:00Z. This is done using ofEpochMilli():Instant instant = Instant.ofEpochMilli(342627282920l);Now, get the Epoch seconds from Instant:instant.getEpochSecond();Exampleimport java.time.Instant; public class Demo { public static void main(String[] args) { Instant instant = Instant.ofEpochMilli(342627282920l); long res = instant.getEpochSecond(); System.out.println(res); } }Output342627282
To update one column data to another column, you can use UPDATE command. Let us first create a table −mysql> create table DemoTable ( UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY, UserFirstName varchar(20), ListOfName varchar(20) ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(UserFirstName, ListOfName) values('John', 'Larry'); Query OK, 1 row affected (0.29 sec) mysql> insert into DemoTable(UserFirstName, ListOfName) values('Carol', null); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable(UserFirstName, ListOfName) values('David', 'Sam'); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable(UserFirstName, ListOfName) ... Read More
The seed bytes as required can be obtained using the method getSeed() in the class java.security.SecureRandom. This method requires a single parameter i.e. the number of seed bytes that need to be generated and it returns the seed bytes as required.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo { public static void main(String[] argv) { try { SecureRandom sRandom = SecureRandom.getInstance("SHA1PRNG"); byte[] arrB = sRandom.getSeed(5); System.out.println("The Seed Bytes in array are: " + Arrays.toString(arrB)); ... Read More
You can create a temporary table with data type DECIMAL to get a warning when a float value is inserted into an int column. Display the same warning using SHOW WARNINGS.Let us create a table to understand. The query is as follows to create a table.mysql> create temporary table WarningDemo -> ( -> Value DECIMAL -> ); Query OK, 0 rows affected (0.13 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into WarningDemo values(9.80); Query OK, 1 row affected, 1 warning (0.03 sec)Here we are getting a warning. Let ... Read More
The language attribute indicates the programming language used in scripting the JSP page.For example, because you usually use Java as the scripting language, your language option looks like this −
The tag sets a variable to the value of an XPath expression.If the XPath expression results in a boolean, tag sets a java.lang.Boolean object; for a string, java.lang.String; and for a number, java.lang.Number.AttributeThe tag has the following attributes −AttributeDescriptionRequiredDefaultvarA variable that is set to the value of the XPath expressionYesBodyselectThe XPath expression to be evaluatedNoNonescopeScope of the variable specified in the var attributeNoPageExampleFollowing example will show how to use the tag − JSTL Tags Books Info: ... Read More
The findAny() method of the DoubleStream class returns an OptionalDouble describing some element of the stream, or an empty OptionalDouble if the stream is empty.The syntax is as followsOptionalDouble findAny()Here, OptionalDouble is a container object which may or may not contain a double value To use the DoubleStream class in Java, import the following packageimport java.util.stream.DoubleStream;Create a DoubleStream and add some elementsDoubleStream doubleStream = DoubleStream.of(23.8, 30.2, 50.5, 78.9, 80.4, 95.8);Now, display an elementOptionalDouble res = doubleStream.findAny(); The following is an example to implement DoubleStream findAny() method in JavaExample Live Demoimport java.util.*; import java.util.stream.DoubleStream; public class Demo { public static void ... Read More
The forEachOrdered() method in Java performs an action for each element of this stream, guaranteeing that each element is processed in encounter order for streams that have a defined encounter order.The syntax is as follows −void forEachOrdered(LongConsumer action)Here, parameter wrapper is a non-interfering action to perform on the elements. LongConsumer represents an operation that accepts a single long-valued argument and returns no result.To use the LongStream class in Java, import the following package −import java.util.stream.LongStream;The following is an example to implement LongStream forEachOrdered() method in Java −Example Live Demoimport java.util.*; import java.util.stream.LongStream; public class Demo { public static void ... Read More