Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles on Trending Technologies
Technical articles with clear explanations and examples
How to Map IntSteam to String object in Java
To Map IntStream to String object, use mapToObj and within that set the values −.mapToObj(val -> "z" + val)Before that, we used range() on IntStream −IntStream.range(1, 10)The following is an example to map IntStream to String object in Java −Exampleimport java.util.stream.IntStream; public class Demo { public static void main(String[] args) throws Exception { IntStream.range(1, 10) .mapToObj(val -> "z" + val) .forEach(System.out::println); } }Outputz1 z2 z3 z4 z5 z6 z7 z8 z9
Read MoreMySQL search results by month in format 2015-07-01 11:15:30?
Use MONTH() and YEAR() for this. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, ShippingDate datetime ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(ShippingDate) values('2019-01-21 10:40:21'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable(ShippingDate) values('2015-07-01 11:15:30'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(ShippingDate) values('2012-12-31 10:45:56'); Query OK, 1 row affected (0.14 sec)Display all records from the table ...
Read MoreCan we select only some of the text in JTextArea?
Yes, we can do that using built-in methods of JTextArea components. Let’say the following is our JTextArea −JTextArea textArea = new JTextArea("This is a text displayed for our example. We have selected some of the text.");Now, use the methods setSelectionStart() and setSelectionEnd() to select some text in a range −textArea.setSelectionStart(5); textArea.setSelectionEnd(20);The following is an example to select some of the text in a JTextArea −Examplepackage my; import java.awt.GridLayout; import javax.swing.*; public class SwingDemo { SwingDemo() { JFrame frame = new JFrame("Demo"); JTextArea textArea = new JTextArea("This is a text displayed for our example. ...
Read MoreHow to turn Android device screen on and off programmatically?
This example demonstrate about How to turn Android device screen on and off programmatically.Step 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 Step 3 − Add the following code to res/xml/policies.xml Step 4 − Add the following code to src/DeviceAdminpackage app.tutorialspoint.com.sample ; import android.app.admin.DeviceAdminReceiver ; import android.content.Context ; import android.content.Intent ; import android.widget.Toast ...
Read MoreHow to get the list of all drivers registered with the DriverManager using JDBC?
The java.sql.DriverManager class manages JDBC drivers in your application. This class maintains a list of required drivers and load them whenever it is initialized.Therefore, you need to register the driver class before using it. However, you need to do it only once per application.One way to register a driver class object to Driver manager is the registerDriver() method of the DriverManager class. To this method you need to pass the Driver object as a parameter.//Instantiating a driver class Driver driver = new com.mysql.jdbc.Driver(); //Registering the Driver DriverManager.registerDriver(driver);List of all the DriversYou can get the list of all the drivers registered ...
Read MoreHow to Map double to int Object with mapToInt and mapToObj in Java?
At first, we have set the stream −Stream.of(3.5, 4.7, 7.9, 8.2, 9.1, 10.5, 12.3, 15.8)Now to Map double to int Object, use mapToObj −.mapToInt(Double::intValue) .mapToObj(a -> "val" + a)The following is an example to Map double to int Object with mapToInt and mapToObj −Exampleimport java.util.stream.Stream; public class Demo { public static void main(String[] args) throws Exception { Stream.of(3.5, 4.7, 7.9, 8.2, 9.1, 10.5, 12.3, 15.8) .mapToInt(Double::intValue) .mapToObj(a -> "val" + a) .forEach(System.out::println); } }Outputval3 val4 val7 val8 val9 val10 val12 val15
Read MoreImplement GREATEST() in MySQL and update the table?
Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Number int ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Number) values(10); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable(Number) values(50); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(Number) values(100); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable(Number) values(190); Query OK, 1 row affected (0.12 sec)Display all ...
Read MoreJava Program to replace the first 10 characters in JTextArea
To replace the first 10 character in text area, use the replaceRange() method in Java and replace the old text with the new text.Let’s say the following is oude demo text set with JTextArea −JTextArea textArea = new JTextArea("This is a text displayed for our example. We have replaced some of the text.");Now, replace the characters in a range −int begn = 0; int end = 10; // replace textArea.replaceRange("Replaced! ", begn, end);The following is an example to replace the first 10 charactrers in JTextArea −Examplepackage my; import java.awt.GridLayout; import javax.swing.*; public class SwingDemo { SwingDemo() { ...
Read MoreHow to make a phone call using intent in Android?
This example demonstrate about How to lock the Android device programmatically.Step 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 Step 3 − Add the following code to src/MainActivitypackage app.tutorialspoint.com.sample ; import android.content.Intent ; import android.net.Uri ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; public class MainActivity extends AppCompatActivity { @Override protected void onCreate (Bundle savedInstanceState) { super .onCreate(savedInstanceState) ; setContentView(R.layout. activity_main ) ...
Read MorePerform multiplication in SELECT depending on column value in MySQL?
You can use CASE statement for this. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Value1 int, Value2 int ); Query OK, 0 rows affected (0.76 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Value1, Value2) values(10, 5); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable(Value1, Value2) values(20, 0); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(Value1, Value2) values(40, 10); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable(Value1, Value2) ...
Read More