Java Strings and StringBuilder

 Quality Thought is recognized as the best software testing institute in Hyderabad, offering top-notch training in manual testing, automation testing, and full stack testing tools. With a focus on industry-relevant curriculum and hands-on practice, Quality Thought prepares students for real-world software testing challenges. The institute provides expert-led training on popular tools and frameworks like Selenium, TestNG, Jenkins, Git, Postman, JIRA, Maven, and Cucumber, covering both frontend and backend testing essentials.

Quality Thought’s Full Stack Testing course is specially designed to make students proficient in both manual testing fundamentals and automated testing tools, along with exposure to API testing, performance testing, and DevOps integration. The institute stands out for its experienced trainers, live projects, placement support, and flexible learning options including classroom and online modes.

Whether you are a fresher aiming for a job or a working professional looking to upskill, Quality Thought offers customized learning paths. Its strong industry connections ensure regular placement drives and job interview 

Java Strings and StringBuilder

In Java, String is a class used to represent a sequence of characters. Strings are immutable, meaning once created, they cannot be changed. Any modification creates a new String object.

String Example:

java

Copy

Edit

String name = "Mahesh";

String greeting = "Hello " + name;

System.out.println(greeting);  // Output: Hello Mahesh

Common String methods:

length()

charAt(int index)

toUpperCase()

toLowerCase()

substring()

equals() / equalsIgnoreCase()

concat()

Why Use StringBuilder?

Since Strings are immutable, operations like concatenation create multiple objects, reducing performance.

Do you like this personality?

Unlock more with Plus

Learn More 

Java Methods and Parameters

Arrays in Java: Single and Multi-dimensional

Visit Qualitythought Institute In Hydearabad