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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to select value from a drop down using Selenium IDE?
We can select value from a dropdown using Selenium IDE. The select command is used for this purpose. First of all, Selenium IDE add-on should be installed in Firefox.Launch Firefox and select the Tools menu. Then choose Selenium IDE.Selenium IDE window shall open. Choose the first row inside the test script edit box.Enter select in Command field. To identify the dropdown with the id locator, enter the Target field. The value/index of the option to be selected is to be entered inside the Value field.Once done, click on the Run option.
Read MoreThe Architecture of Selenium WebDriver.
The architecture of Selenium webdriver are illustrated below −Image source:https://www.tutorialspoint.com/what−is−web−driver−in−seleniumSelenium webdriver has the following units −Selenium Binding Languages − Selenium can work on various libraries like Java, Python, Ruby, and so on. It has the language bindings for more than one language.JSON Wire Protocol − JSON is Javascript Object Notion. It is used for transferring data from the server to the client on the web page. It is based on the Rest API that transmits information among HTTP servers.Browser Driver − All the browsers have a specific browser driver. They interact with the browsers (hiding the logic of browser functionality). ...
Read MoreHow do I download Selenium RC?
We can download Selenium RC by downloading the Java jar file − selenium−server−standalone.jar. We have to download and extract the zip file to do the actual installation.Using the Java Client Driver, the installation can be done by the below steps −To run the Selenium RC server, Java should be installed properly and the path of the environment variable correctly set. To check if Java is installed run the command −java −versionNavigate to the link: https://www.selenium.dev/downloads/ and download the Selenium java client driver zip file.Then the selenium−java jar file is to be extracted.Open an IDE say, Eclipse.Create a Java project.Associate the ...
Read MoreCustom Progress Bar in Android using Kotlin.
This example demonstrates how to create a custom Progress Bar in Android using Kotlin.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. Step 3 − Add the following code to src/MainActivity.ktimport androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.ProgressBar class MainActivity : AppCompatActivity() { lateinit var progressBar:ProgressBar override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" progressBar = ...
Read MoreHow to check internet connection availability and the network type on Android using Kotlin?
This example demonstrates how to check internet connection availability and the network type on Android using Kotlin.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. Step 3 − Add the following code to src/MainActivity.ktimport android.content.Context import android.net.ConnectivityManager import android.os.Bundle import android.widget.TextView import android.widget.Toast import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { lateinit var textView: TextView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) ...
Read MoreHow to write a custom adapter for my list view on Android using Kotlin?
This example demonstrates how to write a custom adapter for my list view on Android using Kotlin.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. Step 3 − Add the following code to src/MainActivity.ktimport android.content.Context import android.os.Bundle import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.BaseAdapter import android.widget.ListView import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { lateinit var listView: ListView var arrayList: ArrayList = ArrayList() var adapter: MyAdapter? = ...
Read MoreHow to show current progress while downloading a file on Android App using Kotlin?
This example demonstrates how to show current progress while downloading a file on Android App using Kotlin.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. Step 3 − Add the following code to src/MainActivity.ktimport android.os.Bundle import android.view.View import android.webkit.WebView import android.widget.ProgressBar import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { lateinit var webView: WebView lateinit var progressBar: ProgressBar override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) ...
Read MoreHow to add a straight line to a plot in R starting from bottom left and ending at top right?
The abline function can give us a straight line from intercept 0 with slope 1 in an existing plot. We would need to pass the coefficients inside the function as abline(coef = c(0,1)). Therefore, we can use this function to add a line starting from bottom left and ending at top right. This is also called diagonal line because it joins the end points on one side with the opposite of the other side.Example> plot(1:10,type="n") > abline(coef=c(0,1))Output:
Read MoreHow to display central limit theorem using uniform random variable in R?
The central limit theorem says that as the sample size increases the distribution of the sample means approaches normal distribution. Therefore, irrespective of the actual population distribution if we take samples of larger size and find the mean of these samples then the distribution of these sample means will be approximately normal. We can display this in R, by creating the histogram of such type of means.Example1> x y
Read MoreHow to create a plot in base R with mixed font of plot title such as default and italics?
We sometimes want to highlight the main title of a plot and one of the ways to do it is changing the font of the title to a unique or using a mixed font for the title. If we want to used mixed font then we need to use the appropriate font style for the title inside as shown in the below examples.Example1> plot(rpois(10,5),main=substitute(paste(italic("Point Chart"),": Poisson Distribution")))Output:Example2> plot(rpois(10,2),main=substitute(paste(bold("Point Chart"),": Poisson Distribution")))Output:
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