JAVA : What is a string in Java? SDET Automation Testing Interview Questions & Answers

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Level up your SDET and QA skills! 🚀 JAVA : What is a string in Java?

SDET Automation Testing Interview Questions & Answers

We will be covering a wide range of topics including QA manual testing, automation testing, Selenium, Java, Jenkins, Cucumber, Maven, and various testing frameworks.

In Java, a string is a sequence of characters. It is a data type that represents textual data. Strings in Java are immutable, meaning they cannot be changed once created.

In Java, strings are represented by the java.lang.String class. This class provides numerous methods for working with strings, such as concatenation, substring extraction, searching, and more.

Strings in Java can be created using string literals enclosed in double quotes, for example:

String myString = "Hello, World!";

Strings can also be created using the new keyword and the String constructor, like this:

String myString = new String("Hello, World!");

Java provides various operations and methods to manipulate and perform operations on strings, such as comparing strings, converting cases, extracting substrings, concatenating, and replacing characters or substrings within a string.

Since strings are immutable in Java, any operation that appears to modify a string actually creates a new string object.

This property ensures the stability and immutability of string values, making them reliable for various use cases in Java programming.