Importance of the super and this Keywords and Exceptions in Java | Hands-On Automation Testing with Java for Beginners

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Hands-On Automation Testing with Java for Beginners

2.3 (3)

Hands-On Automation Testing with Java for Beginners

2.3 (3)

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.

Preface

Preface

Who this book is for

What this book covers

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First Programming Steps in Java

First Programming Steps in Java

An introduction to Java and its installation

Working with the Java editor tools

Writing your first executable program in Java

Summary

Understanding Classes, Objects, and Their Usage in Java

Understanding Classes, Objects, and Their Usage in Java

Difference between strings and variables

Using methods

Importance of classes and objects in Java

Summary

Handling Strings and Their Functions in Java

Handling Strings and Their Functions in Java

Introducing strings

The String class and its methods

Reversing a string's logic

Summary

Building Blocks for Java Programs – Loops and Conditions

Building Blocks for Java Programs – Loops and Conditions

The for loop

if...else condition

The while loop

Nested loops

Summary

Everything You Need to Know About Interfaces and Inheritance

Everything You Need to Know About Interfaces and Inheritance

Interfaces

Inheritance

Function overloading

Function overriding

Summary

Learn Everything about Arrays

Learn Everything about Arrays

Arrays and their usage in Java programs

Ways to initialize arrays and assign objects

Logic programming on multidimensional arrays

Practice exercises

Summary

Understanding Date Class and Constructors in Java 11

Understanding Date Class and Constructors in Java 11

The Date class

The Calendar class

Constructors

Parameterized constructors

Summary

Importance of the super and this Keywords and Exceptions in Java

Importance of the super and this Keywords and Exceptions in Java

The super keyword

Practical usage of the super keyword

Importance of the this keyword

Different kinds of exception

The try...catch mechanism to handle exceptions

Importance of the finally block in Java

Summary

Understanding the Collections Framework

Understanding the Collections Framework

The collections framework

The List collection

The Set collection

The Map collection

Summary

The Importance of the final Keyword, Packages, and Modifiers

The Importance of the final Keyword, Packages, and Modifiers

The final keyword

Packages

Modifiers in Java

Summary

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Practical usage of the super keyword

In this section, we will take a look at the different ways to use the super keyword in Java.

Using the super keyword for methods

We saw how to handle the parent variable with the help of the super keyword. In this section, we will see how to handle two methods if their names are the same in the parentDemo and childDemo classes. We'll use the previous example in this section too.

In the parentDemo class, add a method called getData(), and inside the method give a print statement to display the "I am in parent class" message. If we want to execute the getData() method in the childDemo class, we write cd.getData() in the main method of the childDemo class. We can access getData() as we are inheriting the properties of the parentDemo class. If we run the childDemo class, we will receive the previous example's output as well as the new sentence we added in the parentDemo class, I am in parent class.

In the childDemo class, we will define another method with the...

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Tech Concepts

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Programming languages

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