Java Strings Explained | All String Methods with Examples | String Immutability | Core Java | 4
Welcome to QAWithSJ! 🚀
In this Core Java tutorial, you'll learn Java Strings from scratch along with the most commonly used String methods, real-time examples, and interview questions.
📚 Topics Covered:
✅ What is a String?
✅ Why String is a Class in Java?
✅ String Declaration & Initialization
✅ String Immutability Explained
✅ String Concatenation (+ and concat())
✅ String Methods with Examples:
• length()
• toUpperCase()
• toLowerCase()
• indexOf()
• charAt()
• contains()
• startsWith()
• endsWith()
• equalsIgnoreCase()
• substring()
• replace()
• split()
• trim()
• concat()
✅ Real-Time Examples
✅ Interview Questions
✅ Best Practices
You'll also learn:
✔ Why Strings are Immutable
✔ Difference between + and concat()
✔ Most Frequently Used String Methods
✔ Practical Coding Examples
This video is perfect for:
✔ Java Beginners
✔ Selenium Automation Engineers
✔ Playwright Automation Engineers
✔ Cypress Automation Engineers
✔ API Automation Engineers
✔ Software Developers
✔ Java Interview Preparation
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📌 Core Java Playlist
✔ Java Data Types & Variables
✔ Type Conversion & Type Casting
✔ Java Operators
✔ Java Strings
✔ Conditional Statements
✔ Loops
✔ Arrays
✔ Methods
✔ OOP Concepts
✔ Exception Handling
✔ Collections
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About QAWithSJ
I'm SJ, a Senior QA Software Engineer sharing practical knowledge on Core Java, Selenium, Playwright, Cypress, API Testing, GitHub, CI/CD, and Automation Frameworks.
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