REST API Automation Testing from Scratch - REST Assured Java - Strings in Java

The video tutorial introduces the string class in Java, highlighting its significance in text manipulation, especially in Selenium projects. It covers practical examples of using string methods for text validation, such as checking for currency symbols. The tutorial explains various methods like characterAt, indexOf, and substring, demonstrating their application in real-world scenarios. It also discusses the simplified syntax for creating string objects and the importance of understanding string methods for effective programming.

What is the primary use of the String class in Java?

• To handle file input/output

• To manipulate text data

• To manage network connections

• To perform mathematical operations

In the practical example, what is used as a checkpoint for text validation?

• A percentage sign

• An asterisk

• A dollar sign

• A hash symbol

How can you create an object of the String class in Java?

• Using the 'create' keyword

• Using the 'new' keyword

• Using the 'build' keyword

• Using the 'init' keyword

What is the default way to create a String object in Java?

• String str = text;

• String str = new Object();

• String str = 'text';

• String str = new String();

Which method is used to find the character at a specific index in a string?

• indexOf

• toUpperCase

• charAt

• substring

What does the indexOf method return?

• The substring from a given index

• The length of the string

• The index of a specified character

• The character at a given index

Which method would you use to find the position of a character in a string?

• toUpperCase

• substring

• indexOf

• charAt

Which method would you use to convert a string to uppercase?

• toUpperCase

• toLowerCase

• charAt

• substring

What is the purpose of the substring method?

• To convert a string to lowercase

• To find the length of a string

• To replace characters in a string

• To extract a portion of a string

Which method can be used to change the case of a string?

• charAt

• indexOf

• substring

• toUpperCase