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This example demonstrate about How to add button to notifications in androidStep 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/MainActivity.package app.tutorialspoint.com.notifyme ; import android.app.NotificationChannel ; import android.app.NotificationManager ; import android.app.PendingIntent ; import android.content.Intent ; import android.os.Bundle ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; import android.widget.Button ; public class MainActivity extends AppCompatActivity { public static final String NOTIFICATION_CHANNEL_ID = "10001" ... Read More
Prepend string to entire column in MongoDB using aggregate framework. Let us first create a collection with documents −> db.prependDemo.insertOne({"StudentFirstName":"John"}); { "acknowledged" : true, "insertedId" : ObjectId("5ccf3bcedceb9a92e6aa1955") } > db.prependDemo.insertOne({"StudentFirstName":"Chris"}); { "acknowledged" : true, "insertedId" : ObjectId("5ccf3bd3dceb9a92e6aa1956") } > db.prependDemo.insertOne({"StudentFirstName":"Robert"}); { "acknowledged" : true, "insertedId" : ObjectId("5ccf3bd8dceb9a92e6aa1957") }Following is the query to display all documents from a collection with the help of find() method −> db.prependDemo.find().pretty();This will produce the following output −{ "_id" : ObjectId("5ccf3bcedceb9a92e6aa1955"), "StudentFirstName" : "John" } { "_id" : ObjectId("5ccf3bd3dceb9a92e6aa1956"), "StudentFirstName" : "Chris" } { "_id" : ObjectId("5ccf3bd8dceb9a92e6aa1957"), ... Read More
Math.ceil() and Math.round() methods differ in a way that the former round off a number to its nearest integer in upward direction of rounding(towards the greater value) whereas the latter round off a number to its nearest integer in downward direction of rounding(towards lower value). Let's examine the two methods individually.Math.ceil()Math.ceil() method round off number passed as parameter to its nearest integer so as to get greater value.ExampleIn the below example when a number 5.34 passed as a parameter, Math.ceil() round off it in to 6, which is a greater value than actual number.Live Demo document.write(Math.ceil(5.34)); ... Read More
To create a Box Layout in Java Swing, use the BoxLayout class. Here, we have also set that the components should be laid our left to right or top to bottom −Box box = new Box(BoxLayout.X_AXIS); box.add(button1); box.add(button2); box.add(button3); box.add(button4); box.add(Box.createGlue()); box.add(button5); box.add(button6); box.add(button7); box.add(button8);Above, we have 8 buttons in our Box Layout. We have separated 4 buttons each using the createGlue() method.The following is an example to create a BoxLayout in Java −Examplepackage my; import java.awt.BorderLayout; import javax.swing.Box; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JScrollPane; public class SwingDemo { public static void main(String args[]) { ... Read More
Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Score int ); Query OK, 0 rows affected (0.89 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Score) values(67); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable(Score) values(78); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable(Score) values(90); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(Score) values(56); Query OK, 1 row affected (0.13 sec)Display all records from the table using select statement −mysql> select *from DemoTable;Output+----+-------+ ... Read More
The value attribute of the element is used to set the value of the list item. Since the value is a number, it would be set only for the ol element in HTML i.e. the ordered list.Following is the syntax −Above, num is the value of the list item in an ordered list. Let us now see an example to implement the value attribute of the element −Example Live Demo Subjects Following are the subjects − Maths Science English French Remaining subjects − Coffee Accounts Programming Networking ... Read More
While reading the contents of a file in certain scenarios the end of the file will be reached in such scenarios a EOFException is thrown.Especially, this exception is thrown while reading data using the Input stream objects. In other scenarios a specific value will be thrown when the end of file reached.Let us consider the DataInputStream class, it provides various methods such as readboolean(), readByte(), readChar() etc.. to read primitive values. While reading data from a file using these methods when the end of file is reached an EOFException is thrown.ExampleFollowing program demonstrates how to handle the EOFException in Java. Live ... Read More
The Location pathname property returns/sets the string corresponding to the URL pathname.SyntaxFollowing is the syntax −Returning value of the pathname propertylocation.pathnameValue of the href property setlocation.pathname = pathOfHostExampleLet us see an example for Location pathname property − Live Demo Location pathname form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; margin:5px; } input[type="button"] { border-radius: 10px; } Location-pathname Current URL: var divDisplay = document.getElementById("divDisplay"); var urlSelect = document.getElementById("urlSelect"); function getpathname(){ divDisplay.textContent = 'URL pathname: '+location.pathname; } OutputThis will produce the following output −Before clicking ‘Get pathname’ button −After clicking ‘Get pathname’ button −
In this section, we will see how to use the catch block for exception handling and the type conversion in C++.At first, let us see a code, and we will see what will be the output, and how they are generating.Example#include using namespace std; int main() { try{ throw 'a'; } catch(int a) { cout
To create high precision timer we can use the chrono library. This library has high resolution clock. This can count in nanoseconds.In this program we will see the execution time in nanoseconds. We will take the time value at first, then another time value at the last, then find the difference to get elapsed time. Here we are using blank loop to pause the effect for sometimes.Example#include #include typedef std::chrono::high_resolution_clock Clock; main() { auto start_time = Clock::now(); for(int i = 0; i