Java Strings

What is a String?

A String represents a sequence of characters, declared as String name = "Asha"; Strings in Java are immutable — once created, their value cannot change.

Common String Methods

• length() — returns the number of characters.
• substring(start, end) — extracts part of the string.
• equals() / equalsIgnoreCase() — compares string content.
• trim() — removes leading/trailing whitespace.
• split() — breaks a string into an array based on a delimiter.

Why Testers Use These

String methods are used constantly when parsing and validating text values pulled from API responses or UI elements.