What is SSH?( Secure Shell ) SSH stands for Secure SHell. It is a secure protocol that allows secure file transfer and remote connections and logins over the untrusted computer network and Internet. The network connection and communication via SSH is encrypted allowing the secure connection. SSH is a network protocol to log into another […]
How to fix java.lang.ClassCastException. In this tutorial, we will fix a Selenium test that fails with the exception java.lang.ClassCastException: class org.openqa.selenium.By$ByCssSelector cannot be cast to class org.openqa.selenium.WebElement. Error Trace java.lang.ClassCastException: class org.openqa.selenium.By$ByCssSelector cannot be cast to class org.openqa.selenium.WebElement (org.openqa.selenium.By$ByCssSelector and org.openqa.selenium.WebElement are in unnamed module of loader ‘app’) at com.testingdocs.sample.AppTest.firstTest(AppTest.java:16) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0( Native Method) at […]
What is a Package In java, we can group a number of classes into a single unit known as packages which also act as a container for a group of classes. Packages resolve name conflicts in the class names. Different packages can contain the classes with the same names. We can import a package using […]
Method Overloading in Java Method overloading in Java is a feature that allows a class to have more than one method having the same name, with different method signatures. It is similar to constructor overloading in java which allows a class to have more than one constructor having different argument lists. Method signature = method […]
Introduction In this tutorial, we will learn to plot a 3D Surface plot using Octave. Useful functions to plot in 3D are as follows : linspace meshgrid surf Code Listing % 3D Surface Plot Example % www.TestingDocs.com points = linspace(-3,3,100); [x,y] = meshgrid(points,points); z= -3./(1+ x.^2 + y.^2); surf(x,y,z); xlabel(“x-axis”); ylabel(“y-axis”); zlabel(“z-axis”); title(“Surface Plot Example […]
Introduction In this tutorial, we will learn the steps involved in adding two graphs to the same figure. To achieve this we need to use subplots in the Octave script code. Subplots allow us to plot one or more plots in a single figure. In this example, let’s plot two sample functions sin(x) and cos(x) […]