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For background and foreground color of the JTextPane, use the following −JTextPane textPane = new JTextPane(); textPane.setBackground(Color.blue); textPane.setBackground(Color.green);For font face, style and size, use the Font class and set the font −Font font = new Font("Serif", Font.ITALIC, 18); textPane.setFont(font);The following is an example to set font, style and color for text in JTextPane −Examplepackage my; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.Font; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTextPane; import javax.swing.text.BadLocationException; import javax.swing.text.SimpleAttributeSet; import javax.swing.text.Style; import javax.swing.text.StyleConstants; import javax.swing.text.StyledDocument; public class SwingDemo { public static void main(String args[]) throws BadLocationException { JFrame frame = new JFrame("Demo"); ... Read More
In the Real time world javascript doesn't have traditional classes as seen in other languages. It has objects and constructors. Object.freeze() is one among many constructor methods helps to freeze an object.Freezing an object does not allow new properties to be added to the object and also prevents the object from changing its own properties. Object.freeze() will always try to preserve the enumerability, configurability, writability and the prototype of the object. It won't create a frozen copy.Applications1) freeze() is used for freezing objects and arrays.2) freeze() is used to make an object immutable.SyntaxObject.freeze(obj)ExampleLive Demo // an object is created ... Read More
For this, use the $addToSet operator. Let us first create a collection with documents −> db.findDocumentWithCommonFieldsDemo.insertOne( { "UserId":1, "UserName":"Carol" } ); { "acknowledged" : true, "insertedId" : ObjectId("5cdf8ebebf3115999ed51200") } > db.findDocumentWithCommonFieldsDemo.insertOne( { "UserId":2, "UserName":"David" } ); { "acknowledged" : true, "insertedId" : ObjectId("5cdf8ebebf3115999ed51201") } > > db.findDocumentWithCommonFieldsDemo.insertOne( { "UserId":1, "UserName":"Sam" } ); { "acknowledged" : true, "insertedId" : ObjectId("5cdf8ebebf3115999ed51202") }Following is the query to display all documents from a collection ... Read More
The ResultSetMetadata class provides various methods that gives information about the current ResultSet object such as number of columns, name of the table, name of the column, datatype of the column etc…To prepare a CREATE query you need to get −Name of the table, using the getTableName() method.Column count, to iterate the columns using the getColumnCount() method.Name of the each column using the getColumnName() method.Data type of each column using the getColumnTypeName() method.Precision of each column using the getPrecision() method.ExampleLet us create a table with name customers in MySQL database using the CREATE query as shown below −CREATE TABLE Customers ... Read More
You can use DISTINCT along with COUNT(). Let us first create a table −mysql> create table DemoTable -> ( -> Id int, -> Score int -> ); Query OK, 0 rows affected (0.95 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10, 90); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(10, 190); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(11, 230); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(11, 130); Query OK, 1 row affected (0.17 ... Read More
The DOM readyState property returns the loading status of the current HTML document.SyntaxFollowing is the syntax −document.readyStateExampleLet us see an example of readyState property − Live Demo html{ height:100%; } body{ text-align:center; color:#fff; background: #ff7f5094; height:100%; } p{ font-weight:700; font-size:1.2rem; } .btn{ background:#0197F6; border:none; height:2rem; border-radius:2px; width:35%; margin:2rem auto; ... Read More
The HTML DOM Input Time type property returns/sets type of Input Time.SyntaxFollowing is the syntax −Returning string valueinputTimeObject.typeSetting type to string valueinputTimeObject.type = stringValueString ValuesHere, “stringValue” can be the following −stringValueDetailstimeIt defines that input type is timedatetime-localIt defines that input type is datetime-localcheckboxIt defines that input type is checkboxtextIt defines that input type is textExampleLet us see an example of Input Time type property − Live Demo Input Time type form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; ... Read More
We can clear the console using C++ code. To do this we have to execute some system commands. In Linux systems, the POSIX is used. We can call system() function to execute system command. For clearing the console in linux, we can use “clear” command. This will be passed inside the system() function.Let us see the code to get the better idea.Example#include using namespace std; int main () { cout
Apple has predefined class Timer, that fires after a certain time interval has elapsed, sending a specified message to a target object.To read more about the Timer class you can check official apple documentation herehttps://developer.apple.com/documentation/foundation/timerTo execute the task repeatedly after fixed interval of time we are going to use timer class. We are going to develop a sample application where the application prints hello Tutorials Point after every 5 seconds.So let’s get started, Step 1 − Open Xcode → New Project → Single View Application → Let’s name it “HelloTutotrialsPoint”Step 2 − Open ViewController.swift and write one method doSomething() below ... Read More
Let us first create a JTabbedPane −JTabbedPane tabbedPane = new JTabbedPane();Create some panels −JPanel panel1, panel2, panel3, panel4, panel5; panel1 = new JPanel(); panel2 = new JPanel(); panel3 = new JPanel(); panel4 = new JPanel(); panel5 = new JPanel();Now, add tabs using the addTab() method and set the panels as well in which the tabs would be visible −tabbedPane.addTab("PHP", panel1); tabbedPane.addTab("Blockchain ", panel2); tabbedPane.addTab("Matlab", panel3); tabbedPane.addTab("JSP ", panel4); tabbedPane.addTab("Servlet", panel5);The following is an example to add a tab in JTabbedPane −package my; import javax.swing.*; import java.awt.*; public class SwingDemo { public static void main(String args[]) { ... Read More