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The value at the current position of the buffer is read and then incremented using the method get() in the class java.nio.IntBuffer. This method returns the value that is at the current buffer position. Also, the BufferUnderflowException is thrown if underflow situation occurs.A program that demonstrates this is given as follows −Example Live Demoimport java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { IntBuffer buffer = IntBuffer.allocate(n); buffer.put(8); buffer.put(1); ... Read More
Before getting into an example, we should know what singleton design pattern 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 Notification 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. In the above code, we ... Read More
You need to use TOP(1) in SQL Server. The syntax is as follows −SELECT TOP(1) *FROM yourTableName WHERE yourCondition;To understand the above syntax, let us create a table. The query to create a table is as follows −create table TopDemoInSQLServer ( Id int, Name varchar(10) );The snapshot of creation of table is as follows −Insert some records in the table using insert command. The query is as follows −insert into TopDemoInSQLServer values(10, 'John'); insert into TopDemoInSQLServer values(14, 'Carol'); insert into TopDemoInSQLServer values(1, 'Sam'); insert into TopDemoInSQLServer values(11, 'Bob'); insert into TopDemoInSQLServer values(18, 'David'); insert into TopDemoInSQLServer values(20, 'Sam');The ... Read More
This example demonstrate about How to get programmatically android device name.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. In the above code, we have taken text view to show device name.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.Manifest; import android.app.ProgressDialog; import android.content.pm.PackageManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v4.app.ActivityCompat; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.webkit.CookieManager; import android.webkit.WebChromeClient; import android.webkit.WebSettings; import android.webkit.WebView; import android.webkit.WebViewClient; import ... Read More
The tag applies an XSL transformation on an XML document.AttributeThe tag has the following attributes −AttributeDescriptionRequiredDefaultdocSource XML document for the XSLT transformationNoBodydocSystemIdURI of the original XML documentNoNonexsltXSLT stylesheet providing transformation instructionsYesNonexsltSystemIdURI of the original XSLT documentNoNoneresultResult object to accept the transformation's resultNoPrint to pagevarVariable that is set to the transformed XML documentNoPrint to pagescopeScope of the variable to expose the transformation's resultNoNoneExampleConsider the following XSLT stylesheet style.xsl − Now consider the following JSP file − JSTL x:transform Tags Books Info: Padam History ZARA 100 Great Mistry NUHA 2000 You will receive the following result −Books InfoPadam HistoryZARA100Great MistryNUHA2000
The listIterator() method CopyOnWriteArrayList class returns a list iterator over the elements in this list, beginning at the specified position in the list.The syntax is as followspublic ListIterator listIterator(int index)Here, index is the index of the first element to be returned from the list iterator.To work with CopyOnWriteArrayList class, you need to import the following packageimport java.util.concurrent.CopyOnWriteArrayList;The following is an example to implement CopyOnWriteArrayList class listIterator() method in Java. We have set the index as 3, therefore, the list would be iterated from index 3Example Live Demoimport java.util.Iterator; import java.util.ListIterator; import java.util.concurrent.CopyOnWriteArrayList; public class Demo { public static void main(String[] ... Read More
To find a document by the non-existence of a field in MongoDB, the syntax is as follows −db.yourCollectionName.find({ "yourFieldName" : { "$exists" : false } }).pretty();To understand the above syntax, let us create a collection with the document. The query to create a collection with a document is as follows −> db.findDocumentNonExistenceFieldDemo.insertOne({"StudentName":"John", "StudentAge":25}); { "acknowledged" : true, "insertedId" : ObjectId("5c8a5c629064dcd4a68b70e8") } > db.findDocumentNonExistenceFieldDemo.insertOne({"StudentName":"David", "StudentAge":26, "StudentMathMarks":78}); { "acknowledged" : true, "insertedId" : ObjectId("5c8a5c809064dcd4a68b70e9") }Display all documents from a collection with the help of find() method. The query is as follows −> db.findDocumentNonExistenceFieldDemo.find().pretty();The following is the output −{ ... Read More
The unordered_multimap reserve() function in C++ STL sets the number of buckets in the container to the most appropriate number so that it contains at least n elements.If n is greater than the current numbers of bucket multiplied by the max_load_factor, the container’s number of buckets is increased and a rehash is forced.Reserve () returns nothing and take n as a parameter which specifies the minimum number of elements as per requested minimum capacity.AlgorithmBegin Declare the vector m. m.reserve(6) = the size is reserved for the bucket to contain minimum number of one elements. Insert the key ... Read More
In C or C++, the main function is like other functions. So we can use the functionalities that are present in some other functions, also in the main function.In the following program, we will see how the main() is using recursively to print some numbers in reverse order.Example Code#include using namespace std; int main () { static int x = 10; cout
To order by two fields sum, you can use the aggregate framework. Let us first create a collection with documents> db.orderByTwoFieldsDemo.insertOne({"Value1":10, "Value2":35}); { "acknowledged" : true, "insertedId" : ObjectId("5ca285576304881c5ce84baa") } > db.orderByTwoFieldsDemo.insertOne({"Value1":12, "Value2":5}); { "acknowledged" : true, "insertedId" : ObjectId("5ca2855f6304881c5ce84bab") } > db.orderByTwoFieldsDemo.insertOne({"Value1":55, "Value2":65}); { "acknowledged" : true, "insertedId" : ObjectId("5ca285686304881c5ce84bac") }Following is the query to display all documents from a collection with the help of find() method> db.orderByTwoFieldsDemo.find().pretty();This will produce the following output{ "_id" : ObjectId("5ca285576304881c5ce84baa"), "Value1" : 10, "Value2" : 35 } { "_id" : ObjectId("5ca2855f6304881c5ce84bab"), "Value1" ... Read More