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Use JList getVisibleRowCount() method to display the row count in a JList:String sports[]= {"Tennis", "Archery", "Football", "Fencing", "Cricket", "Squash", "Hockey", "Rugby"}; Jlist list = new JList(sports); int rowCount = list.getVisibleRowCount(); System.out.println("Row Count = "+rowCount);The following is an example to display row count in JList:Exampleimport java.awt.event.*; import java.awt.*; import javax.swing.*; class SwingDemo extends JFrame { static JFrame frame; static JList list; public static void main(String[] args) { frame = new JFrame("JList Demo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); String sports[]= {"Tennis", Archery", "Football", "Fencing", "Cricket", "Squash", "Hockey", "Rugby"}; list = ... Read More
Here we will see how to trim the strings in C++. The trimming string means removing whitespaces from left and right part of the string.To trim the C++ string, we will use the boost string library. In that library, there are two different methods called trim_left() and trim_right(). To trim string completely, we can use both of them.Example#include #include using namespace std; main(){ string myStr = " This is a string "; cout
This example demonstrate about How to create Android Notification with BroadcastReceiver.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/menu/main_menu.xml. Step 4 − Add the following code to src/MainActivity.package app.tutorialspoint.com.notifyme ; import android.app.AlarmManager ; import android.app.Notification ; import android.app.NotificationManager ; import android.app.PendingIntent ; import android.content.Context ; import android.content.Intent ; import android.os.Bundle ; import android.os.SystemClock ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ... Read More
You can use update command to add a field to existing record. Let us first create a collection with documents −> db.addAFieldToEveryRecordDemo.insertOne({"ClientName":"Chris", "ClientAge":34}); { "acknowledged" : true, "insertedId" : ObjectId("5cd00e32588d4a6447b2e061") } > db.addAFieldToEveryRecordDemo.insertOne({"ClientName":"Robert", "ClientAge":36}); { "acknowledged" : true, "insertedId" : ObjectId("5cd00e59588d4a6447b2e062") }Following is the query to display all documents from a collection with the help of find() method −> db.addAFieldToEveryRecordDemo.find().pretty();This will produce the following output −{ "_id" : ObjectId("5cd00e32588d4a6447b2e061"), "ClientName" : "Chris", "ClientAge" : 34 } { "_id" : ObjectId("5cd00e59588d4a6447b2e062"), "ClientName" : "Robert", "ClientAge" : 36 }Here is the query ... Read More
Let’s say the following is our JTextPane with orange background color −JTextPane textPane = new JTextPane(); textPane.setBackground(Color.orange);Now, set the style and attributes. Also, set the font −SimpleAttributeSet attributeSet = new SimpleAttributeSet(); StyleConstants.setItalic(attributeSet, true); textPane.setCharacterAttributes(attributeSet, true); textPane.setText("Recall this and "); Font font = new Font("Verdana", Font.BOLD, 22); textPane.setFont(font);After the text displayed above, we will insert an image using setIcon() −StyledDocument doc = (StyledDocument) textPane.getDocument(); Style style = doc.addStyle("StyleName", null); StyleConstants.setIcon(style, new ImageIcon("E:\kind.png")); doc.insertString(doc.getLength(), "invisible text", style);The following is an example to insert an image into a component. Here, we have inserted an image into a JTextPane component −Examplepackage my; import ... Read More
To enable colum selection, use the setColumnSelectionAllowed() method and set it to TRUE −table.setCell setColumnSelectionAllowed(true);The following is an example to enable column selection in a table −Examplepackage my; import java.awt.Color; import javax.swing.BorderFactory; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.border.TitledBorder; public class SwingDemo { public static void main(String[] args) { JFrame frame = new JFrame(); JPanel panel = new JPanel(); panel.setBorder(BorderFactory.createTitledBorder( BorderFactory.createEtchedBorder(), "ODI Rankings", TitledBorder.CENTER, TitledBorder.TOP)); String[][] rec = { { "1", "Steve", "AUS" }, ... Read More
Here, now() represents the current date. To check whether it falls between two specific dates, you need to use the BETWEEN. Let us first create a table −mysql> create table DemoTable ( FirstDate datetime, SecondDate datetime ); Query OK, 0 rows affected (0.60 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-04-01', '2019-05-02'); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable values('2019-05-28', '2019-06-04'); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values('2016-01-31', '2019-03-01'); Query OK, 1 row affected (0.15 sec)Display all records from the table ... Read More
The for attribute of the element sets the relationship between the result of the calculation and the elements used in the calculation.Following is the syntax:Above, id is the element id, which sets a separate list of one or more elements with a space. These elements specify the relationship between the result of the calculation and the elements used in the calculation.Let us now see an example to implement the for attribute of the element:Example Live Demo Result 0 100++ = OutputNow, increase the slider and the result would get displayed:
The increment operator increments the value of the operand by 1 and the decrement operator decrements the value of the operand by 1. We use these operators to increment or, decrement the values of the loop after executing the statements on a value.Example Live Demopublic class ForLoopExample { public static void main(String args[]) { //Printing the numbers 1 to 10 for(int i = 1; i=1; i--) { System.out.print(" "+i); } } }Output1 2 3 4 5 6 7 8 9 10 10 9 8 7 6 ... Read More
The HTML DOM select length property returns the number of elements inside a drop-down list in an HTML document.SyntaxFollowing is the syntax −object.lengthExampleLet us see an example of HTML DOM select length property − Live Demo html{ height:100%; } body{ text-align:center; color:#fff; background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) center/cover no-repeat; height:100%; } p{ font-weight:700; font-size:1.2rem; } .drop-down{ width:35%; border:2px solid #fff; ... Read More