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This example demonstrate about How to get current foreground activity context 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 src/MyApp.javapackage app.tutorialspoint.com.sample ; import android.app.Activity ; import android.app.Application ; public class MyApp extends Application { private Activity mCurrentActivity = null; @Override public void onCreate () { super .onCreate() ; } public Activity getCurrentActivity () { return mCurrentActivity ; } public void setCurrentActivity ... Read More
To return documents of a collection without objectId, set _id:0. Let us first create a collection with documents −> db.returnDocumentWithoutObjectId.insertOne({"Name":"Carol", "Age":25}); { "acknowledged" : true, "insertedId" : ObjectId("5ce8ba6c78f00858fb12e8fa") } > db.returnDocumentWithoutObjectId.insertOne({"Name":"Sam", "Age":21}); { "acknowledged" : true, "insertedId" : ObjectId("5ce8ba6d78f00858fb12e8fb") } > db.returnDocumentWithoutObjectId.insertOne({"Name":"John", "Age":23}); { "acknowledged" : true, "insertedId" : ObjectId("5ce8ba6f78f00858fb12e8fc") }Following is the query to display all documents from a collection with the help of find() method −> db.returnDocumentWithoutObjectId.find();This will produce the following output −{ "_id" : ObjectId("5ce8ba6c78f00858fb12e8fa"), "Name" : "Carol", "Age" : 25 } { "_id" : ObjectId("5ce8ba6d78f00858fb12e8fb"), "Name" : "Sam", "Age" : ... Read More
_.size()_.Size() is from the underscore.js library of javascript. This is used to find the size of an array. One should make sure that before using this method one should use the CDN of the underscore.js to execute the code.syntax_.size(array);Example-1In the following example, a normal array is passed into _.size() method to get the size of the array.Live Demo var arr = [100, 62, 73, 534, 565]; document.write(_.size(arr)); Output5Example-2In the following example, an array that consists of object elements is sent into _.size() method to find the size.Live Demo ... Read More
The Input URL required property determines whether Input URL is compulsory to set or not.SyntaxFollowing is the syntax −Returning boolean value - true/falseinputURLObject.requiredSetting required to booleanValueinputURLObject.required = booleanValueBoolean ValuesHere, “booleanValue” can be the following −booleanValueDetailsTrueIt is compulsory to set the url field to submit form.FalseIt is the default value and to set an url field is not compulsory.ExampleLet us see an example for Input URL required property − Live Demo Input URL required form { width:70%; margin: 0 auto; text-align: center; } * { ... Read More
To set fullscreen mode for your Java Swing application, use the setFullScreenWindow() method:GraphicsDevice device = graphics.getDefaultScreenDevice(); JFrame frame = new JFrame("Fullscreen"); device.setFullScreenWindow(frame);The following is an example to set fullscreen mode for Java Swing Application:Exampleimport java.awt.Color; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; public class SwingDemo { public static void main(String[] args) { GraphicsEnvironment graphics = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice device = graphics.getDefaultScreenDevice(); JFrame frame = new JFrame("Fullscreen"); JPanel panel = new JPanel(); JLabel label = new JLabel("", JLabel.CENTER); ... Read More
Mnemonic key is set so that a user can use Keyboard keys to select a Radio Button. For example, a key can be set with ALT −radio2.setMnemonic(KeyEvent.VK_R);Above, we have set key ALT+R for radio2.The following is an example to set Mnemonic key radio button −package my; import java.awt.FlowLayout; import java.awt.event.KeyEvent; import javax.swing.ButtonGroup; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JRadioButton; public class SwingDemo { public static void main(String[] args) { JRadioButton radio1 = new JRadioButton("Male"); JRadioButton radio2 = new JRadioButton("Female"); radio2.setMnemonic(KeyEvent.VK_R); ButtonGroup group = new ButtonGroup(); ... Read More
To fetch domain name by passing name in MySQL, you can use substring_index(). Let us first create a table −mysql> create table DemoTable ( UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY, UserMailId varchar(200) ); Query OK, 0 rows affected (0.77 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(UserMailId) values('John9989@facebook.com'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable(UserMailId) values('983773CS@yahoo.com'); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable(UserMailId) values('Chris95@gmail.com'); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+--------+-----------------------+ | UserId | UserMailId | +--------+-----------------------+ | ... Read More
itermonthdays2().It is similar to itermonthdates(), Days returned will be tuples (i.e) it consists of a day number and a weekday number. this method is used to get an iterator for the month in the year.Exampleimport calendar i= calendar.Calendar() for days in i.itermonthdays2(2019, 5): print(days)Output(0, 0) (0, 1) (0, 2) (0, 3) (0, 4) (0, 5) (1, 6) (2, 0) (3, 1) (4, 2) (5, 3) (6, 4) (7, 5) (8, 6) (9, 0) (10, 1) (11, 2) (12, 3) (13, 4) (14, 5) (15, 6) (16, 0) (17, 1) (18, 2) (19, 3) (20, 4) (21, 5) (22, 6) (23, 0) (24, 1) (25, 2) (26, 3) (27, 4) (28, 5) (29, 6) (30, 0) (31, 1) (0, 2) (0, 3) (0, 4) (0, 5) (0, 6)
To highlight all the text, use the selectAll() method of the JTextPane component −JTextPane pane = new JTextPane(); pane.selectAll();The following is an example to highlight the JTextPane text. Here, we are displaying a code in the JTextPane and highlighting it −Examplepackage my; import java.awt.BorderLayout; import java.awt.Container; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTextPane; import javax.swing.text.BadLocationException; public class SwingDemo { public static void main(String args[]) throws BadLocationException { JFrame frame = new JFrame("Demo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container container = frame.getContentPane(); JTextPane pane = new JTextPane(); pane.setContentType("text/html"); ... Read More
This example demonstrate about How to check if Location Services are enabled in Android App.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.java Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.sample ; import android.content.Context ; import android.content.DialogInterface ; import android.content.Intent ; import android.location.LocationManager ; import android.os.Bundle ; import android.provider.Settings ; import android.support.v7.app.AlertDialog ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; import android.widget.Button ; import android.widget.TextView ; public class MainActivity extends AppCompatActivity ... Read More