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We know that we need to declare variables before using it in our code. However, we variables can be assigned with 0 or 1 without declaration. In the following example we can see this.Example#include #include x, y, array[3]; // implicit initialization of some variables int main(i) { //The argument i will hold 1 int index; printf("x = %d, y = %d", x, y); for(index = 0; index < 3; index++) printf("Array[%d] = %d", i, array[i]); printf("The value of i : %d", i); }Outputx = 0, y = 0 ... Read More
In this program we will see how to transfer the switch values from one port to another using 8085 and 8255 chip.Problem Statement:Write 8085 Assembly language program for interfacing between 8085 and 8255. Here eight switches are connected at port A. Transfer the status of these switches into port B. In port B the LEDs are connected.Discussion:The task is very simple. At first we have to setup the control word register of 8255 chip. After that we will take the input from port A, and send it to port B.The control word register is looks like this. It is holding ... Read More
Before getting into an example, we should know what sqlite data base in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built-in SQLite database implementation. SQLite supports all the relational database features. In order to access this database, you don't need to establish any kind of connections for it like JDBC, ODBC etc.This example demonstrate about How to use changes () in Android sqlite.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to ... Read More
The getProperty action is used to retrieve the value of a given property and converts it to a string, and finally inserts it into the output.The getProperty action has only two attributes, both of which are required. The syntax of the getProperty action is as follows − ... Following table lists out the required attributes associated with the getProperty action −Sr.No.Attribute & Description1nameThe name of the Bean that has a property to be retrieved. The Bean must have been previously defined.2propertyThe property attribute is the name of the Bean property to be retrieved.ExampleLet us define a test bean that will ... Read More
This example demonstrate about How to find its first non-repeating character in a given string in android.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 first non-repeating character.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.widget.TextView; import java.lang.reflect.Array; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.HashSet; ... Read More
To set Octet value in Java, you need to use the setAtX() method. Here, X is the index wherein you need to set the value i.e. to set value at index 1, use the setAt1() and value as a parameter.Let us first see what we need to work with JavaTuples. To work with Octet class in JavaTuples, you need to import the following package −import org.javatuples.Octet;Note − Download JavaTuples Jar library to run JavaTuples program. If you are using Eclipse IDE, then Right Click Project -> Properties -> Java Build Path -> Add External Jars and upload the downloaded JavaTuples ... Read More
Use the aggregate framework to find all duplicate documents in a MongoDB collection by a key 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.findDuplicateByKeyDemo.insertOne({"StudentId":1, "StudentName":"John"}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f5b168d10a061296a3c3a") } > db.findDuplicateByKeyDemo.insertOne({"StudentId":2, "StudentName":"Carol"}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f5b1f8d10a061296a3c3b") } > db.findDuplicateByKeyDemo.insertOne({"StudentId":3, "StudentName":"Carol"}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f5b248d10a061296a3c3c") } > db.findDuplicateByKeyDemo.insertOne({"StudentId":4, "StudentName":"John"}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f5b2d8d10a061296a3c3d") } > db.findDuplicateByKeyDemo.insertOne({"StudentId":5, "StudentName":"Sam"}); { "acknowledged" : true, ... Read More
In this C++ program, we implement Sorting containers in STL.Functions and descriptions:Functions used here: l.push_back() = It is used to push elements into a list from the front. l.sort() = Sorts the elements of the list. Where l is a list object.Example Code#include #include #include #include using namespace std; int main() { list l; list::iterator it; int c, i; while (1) { cout
The removeAll() is a method inherited from AbstractCollection class. It removes all the elements of this collection that are also contained in the specified collection.The syntax is as follows:public boolean removeAll(Collection c)Here, the parameter c is the collection having elements to be removed from this collection.To 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 removeAll() 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(); absSequential.add(210); ... Read More
This example demonstrates How to launch another app from your appStep 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 button view to open YouTube application.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.content.ActivityNotFoundException; import android.content.Intent; import android.content.pm.ResolveInfo; import android.content.res.Configuration; import android.graphics.PixelFormat; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.Gravity; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.WindowManager; import ... Read More