The TJX Companies Senior QA Tester Interview Questions and Answers

Q1. WHAT IS HASHMAP
Ans. 
HashMap is a data structure in Java that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap is part of the Java Collections framework.

• It uses hashing to store and retrieve elements efficiently.

• Each key in a HashMap must be unique.

• Example: HashMap map = new HashMap<>(); map.put("apple", 5); int value = map.get("apple");
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WRITE A PROGRAM FOR FIBONACCI SERIES

Q1. STATIC VS FINAL
Ans. 
STATIC vs FINAL - STATIC is used to define a class-level variable or method that can be accessed without creating an instance of the class. FINAL is used to define constants or prevent inheritance or method overriding.
• STATIC variables and methods belong to the class itself, while FINAL variables cannot be changed once initialized.

• STATIC variables are shared among all instances of a class, while FINAL variables are uniq...read more
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