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The concat() method in the Java IntStream class forms a concatenated stream. The elements of this stream are all the elements of the first stream followed by all the elements of the second stream.The syntax is as follows −static IntStream concat(IntStream one, IntStream two)Here, the parameter one is the first stream, whereas two is the second stream. The method returns the concatenated result of the stream one and two.Let us create two IntStream and add some elements −IntStream intStream1 = IntStream.of(10, 20, 30, 40, 50); IntStream intStream2 = IntStream.of(60, 70, 80, 90);Now, to concate both the streams, use the concat() ... Read More
You need to use UPDATE statement for this.The syntax is as followsupdate yourTableName set yourColumnName1=yourValue1, yourColumnName2=yourValue2, ....N where yourCondition;Let us create a table for our examplemysql> create table addWhereClauseDemo -> ( -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> StudentName varchar(30), -> StudentPassword varchar(40) -> ); Query OK, 0 rows affected (0.45 sec)Insert some records in the table using insert command.The query is as followsmysql> insert into addWhereClauseDemo(StudentName, StudentPassword) values('John', 'John123456'); Query OK, 1 row affected (0.14 sec) mysql> insert into addWhereClauseDemo(StudentName, StudentPassword) values('Carol', '99999'); Query OK, 1 row affected (0.24 sec) mysql> insert ... Read More
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