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Use HTMLEditorKitt to change the font size with HTML. With that, use the JEditorPane setText() method to set HTML:HTMLEditorKit kit = new HTMLEditorKit(); editorPane.setEditorKit(kit); editorPane.setSize(size); editorPane.setOpaque(true); editorPane.setText(" This is a demo text with a different font!");The following is an example to change font size with HTML in Java Swing JEditorPane:Exampleimport java.awt.BorderLayout; import java.awt.Container; import java.awt.Dimension; import javax.swing.JEditorPane; import javax.swing.JFrame; import javax.swing.text.html.HTMLEditorKit; public class SwingDemo extends JFrame { public static void main(String[] args) { SwingDemo s = new SwingDemo(); s.setSize(600, 300); Container container = s.getContentPane(); s.demo(container, container.getSize()); ... Read More
String is a group of bytes/words and their memory is always allocated in a sequential order. String is either referred as byte string or word string. Here we will see some instructions which are used to manipulate the string related operations.The String manipulation instructions are as follows.OpcodeOperandDescriptionREPInstructionUsed to repeat the given instruction till CX ≠ 0.REPE/REPZInstructionUsed to repeat the given instruction until CX = 0 or zero flag ZF = 1.REPNE/REPNZInstructionUsed to repeat the given instruction until CX = 0 or zero flag ZF = 1.MOVS/MOVSB/MOVSW----Used to move the byte/word from one string to another.COMS/COMPSB/COMPSW----Used to compare two string bytes/words.INS/INSB/INSW----Used ... Read More
Before getting into example, we should know what singleton design patter is. A singleton is a design pattern that restricts the instantiation of a class to only one instance. Notable uses include controlling concurrency, and creating a central point of access for an application to access its data store.This example demonstrates How to use Singleton with Global 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 res/layout/activity_main.xml."1.0" encoding>"utf-8"?> "http://schemas.android.com/apk/res/android" xmlns:tools>"http://schemas.android.com/tools" android:layout_width>"match_parent" ... Read More
The fromCollection() method is used in JavaTuples to create Septet Tuple from List collection.Let us first see what we need to work with JavaTuples. To work with Septet class in JavaTuples, you need to import the following package −import org.javatuples.Septet;Note − Steps to download and run JavaTuples program. If you are using Eclipse IDE to run Septet Class in JavaTuples, then Right Click Project → Properties → Java Build Path → Add External Jars and upload the downloaded JavaTuples jar file.The following is an example −Exampleimport org.javatuples.Septet; import java.util.*; public class Demo { public static void main(String[] ... Read More
scope attribute identifies the lifecycle of the Action element. The id attribute and the scope attribute are directly related, as the scope attribute determines the lifespan of the object associated with the id. The scope attribute has four possible values: (a) page, (b)request, (c)session, and (d) application.
A BLOB is binary large object that can hold a variable amount of data with a maximum length of 65535 characters.These are used to store large amounts of binary data, such as images or other types of files. Fields defined as TEXT also hold large amounts of data. The difference between the two is that the sorts and comparisons on the stored data are case sensitive on BLOBs and are not case sensitive in TEXT fields. You do not specify a length with BLOB or TEXT.Storing blob in to databaseTo store Blob datatype to database, using JDBC program follow the ... Read More
The distinct() method of the DoubleStream class returns a stream consisting of the distinct elements of this stream.The syntax is as followsDoubleStream distinct()To use the DoubleStream class in Java, import the following packageimport java.util.stream.DoubleStream;Create DoubleStream and add some elements to the streamDoubleStream doubleStream = DoubleStream.of(39.8, 78.7, 64.7, 78.7, 47.8, 89.7, 78.7);Now, to get the distinct elements, use the distinct() methoddoubleStream.distinct() The following is an example to implement DoubleStream distinct() method in Java. We have repeated elements in the streamExample Live Demoimport java.util.stream.DoubleStream; public class Demo { public static void main(String[] args) { ... Read More
An immutable copy of the LocalDate where the years are subtracted from it can be obtained using the minusYears() method in the LocalDate class in Java. This method requires a single parameter i.e. the number of years to be subtracted and it returns the instant with the subtracted years.A program that demonstrates this is given as followsExample Live Demoimport java.time.*; public class Demo { public static void main(String[] args) { LocalDate ld1 = LocalDate.parse("2019-02-14"); System.out.println("The LocalDate is: " + ld1); LocalDate ld2 = ld1.minusYears(2); System.out.println("The LocalDate after subtracting ... Read More
There is no difference between count() and find().count(). Let us see how both of them works. To understand the concept, let us create a collection with the document. The query to create a collection with a document is as follows −> db.countDemo.insertOne({"UserId":1, "UserName":"John"}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f9d278d10a061296a3c5d") } > db.countDemo.insertOne({"UserId":2, "UserName":"Carol"}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f9d308d10a061296a3c5e") } > db.countDemo.insertOne({"UserId":3, "UserName":"Bob"}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f9d3a8d10a061296a3c5f") } > db.countDemo.insertOne({"UserId":4, "UserName":"Mike"}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f9d428d10a061296a3c60") }Display all documents from a collection with the help ... Read More
To get distinct values and count them, you can use GROUP BY clause.The syntax is as followsselect yourColumnName, count(*) as anyAliasName from yourTableName group by yourColumnName;To understand the above syntax, let us create a table. The query to create a table is as followsmysql> create table GroupByAndCountDemo -> ( -> ClientId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> ClientName varchar(100) -> ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into GroupByAndCountDemo(ClientName) values('John'); Query OK, 1 row affected (0.18 sec) mysql> insert ... Read More