Book Image

Hands-On Automation Testing with Java for Beginners

Book Image

Hands-On Automation Testing with Java for Beginners

Overview of this book

Java is one of the most commonly-used software languages by programmers and developers. Are you from a non-technical background and looking to master Java for your automation needs? Then Hands-On Automation Testing with Java for Beginners is for you. This book provides you with efficient techniques to effectively handle Java-related automation projects. You will learn how to handle strings and their functions in Java. As you make your way through the book, you will get to grips with classes and objects, along with their uses. In the concluding chapters, you will learn about the importance of inheritance and exceptions with practical examples. By the end of this book, you will have gained comprehensive knowledge of Java.
Table of Contents (17 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Importance of the this keyword


There is one more keyword in Java that is just like the super keyword: this. In this section, we will take a look at the this keyword.

Let's explain the this keyword with an example. Create a class named thisDemo and declare a variable, a, and assign the value 2 to it. We define a getData() method in its class, declare the a variable inside it, and assign the value 3 to it. We also add a print statement in it. The code will look as follows:

package coreJava;public class thisDemo
{
    int a= 2;
    public void getData()
    {
        int a= 3;
        System.out.println(a);
    }

As we can see, the value of a is 2 in the entire class, but in one specific method, getData(), we want the value of the variable to be 3. In this code, we want to call both values of a, that is, 2 and 3. We create an object in the main method and add the td object in it. The code for the td object is as follows:

thisDemo td=new thisDemo();
td.getData();

If we run the code, the output we...