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Here we will see how the preprocessors are working in C or C++. Let us see what are the preprocessors.The preprocessors are the directives, which give instructions to the compiler to preprocess the information before actual compilation starts.All preprocessor directives begin with #, and only white-space characters may appear before a preprocessor directive on a line. Preprocessor directives are not C++ statements, so they do not end in a semicolon (;).You already have seen a #include directive in all the examples. This macro is used to include a header file into the source file.There are number of preprocessor directives supported ... Read More
In this program, we will see how to check a 16-bit number is a palindrome or not.Problem StatementWrite the 8085 Assembly language program to check a 16-bit number is palindrome or not. The number is stored at location 8000H and 8001H.DiscussionA number is a palindrome if the number and its reversed sequence is the number itself. For example, 5225 is a palindrome, but ABCD is not a palindrome.In this problem, we are taking the number and store it into the HL pair. Then we are performing the reverse operation on L content. If the H and updated L value are ... 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 demonstrate about How to refresh Singleton class every one hour 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 ... Read More
The setAt1() method is used to set the Quartet value in JavaTuples and a copy with new value at the specified index i.e. index 1 here.Let us first see what we need to work with JavaTuples. To work with Quartet class in JavaTuples, you need to import the following package −import org.javatuples.Quartet;Note − Steps to download and run JavaTuples program. If you are using Eclipse IDE to run Quartet 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.Quartet; public ... Read More
JSP comment marks text or statements that the JSP container should ignore. A JSP comment is useful when you want to hide or "comment out", a part of your JSP page.Following is the syntax of the JSP comments −Following example shows the JSP Comments − A Comment Test A Test of Comments The above code will generate the following result −A Test of Comments
The tag is used to parse dates.AttributeThe tag has the following attributes −AttributeDescriptionRequiredDefaultValueDate value to read (parse)NoBodytypeDATE, TIME, or BOTHNodatedateStyleFULL, LONG, MEDIUM, SHORT, or DEFAULTNoDefaulttimeStyleFULL, LONG, MEDIUM, SHORT, or DEFAULTNoDefaultparseLocaleLocale to use when parsing the dateNoDefault localepatternCustom parsing patternNoNonetimeZoneTime zone of the parsed dateNoDefault time zonevarName of the variable to store the parsed dateNoPrint to pagescopeScope of the variable to store the formatted dateNopageA pattern attribute is provided that works just like the pattern attribute for the tag. However, in the case of parsing, the pattern attribute tells the parser what format to expect.Example ... Read More
The month of the year is obtained using getMonthValue() method in the LocalDate class in Java. This method requires no parameter and it returns the month of the year which may be in the range of 1 to 12.A program that demonstrates this is given as follows −Example Live Demoimport java.time.*; public class Main { public static void main(String[] args) { LocalDate ld = LocalDate.parse("2019-02-14"); System.out.println("The LocalDate is: " + ld); System.out.println("The month is: " + ld.getMonthValue()); ... Read More
The sequential() method of the LongStream class in Java returns an equivalent stream that is sequential.The syntax is as follows −LongStream sequential()To use the LongStream class in Java, import the following package −import java.util.stream.LongStream;Create a LongStream and add some elements −LongStream longStream = LongStream.of(50L, 70L, 100L, 150L, 200L, 300L);Now, return an equivalent stream that is sequential −LongStream res = longStream.sequential(); The following is an example to implement LongStream sequential() method in Java −Example Live Demoimport java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream longStream = LongStream.of(50L, 70L, 100L, ... Read More
MongoDB is better when you are querying array elements. Let us use the following syntax for querying array elements −db.yourCollectionName.find({yourArrayFieldName:"yourValue"}).pretty();The above syntax will return all those documents which have the value “yourValue” in an array field.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.queryArrayElementsDemo.insertOne({ ... "StudentName":"John", "StudentFavouriteSubject":["C", "Java"]}); { "acknowledged" : true, "insertedId" : ObjectId("5c90c0354afe5c1d2279d694") } > db.queryArrayElementsDemo.insertOne({ "StudentName":"Carol", "StudentFavouriteSubject":["C", "C++"]}); { "acknowledged" : true, "insertedId" : ObjectId("5c90c0434afe5c1d2279d695") } > db.queryArrayElementsDemo.insertOne({ "StudentName":"David", "StudentFavouriteSubject":["MongoDB", "Java"]}); { "acknowledged" : ... Read More
The containsAll() method of the AbstractSequentialList checks for all the elements in this collection. It returns TRUE if all this collection contains all the elements in the specified collection i.e. if the two collections are same.The syntax is as follows:public boolean containsAll(Collection c)Here, c is the collection to be checkedTo work with the AbstractSequentialList class in Java, you need to import the following package:import java.util.AbstractSequentialList;The following is an example to implement AbstractSequentialList containsAll() method in Java:Example Live Demoimport java.util.LinkedList; import java.util.AbstractSequentialList; public class Demo { public static void main(String[] args) { AbstractSequentialList absSequential = new LinkedList(); ... Read More