HASH TABLE IN JAVA || JAVA INTERVIEW QUESTIONS

🎯 What is HashTable in Java?
In Java, a Hashtable is a collection that stores data in key-value pairs.
👉 It uses a technique called Hashing to quickly find data.
💡 How it works:
A key is converted into a hash code
That hash code decides where the value is stored
⚡ Super fast retrieval!
🔒 Special Feature:
Hashtable is thread-safe
It is synchronized by default (safe for multi-threading)
❌ Limitations:
Does NOT allow null key or value
Slower than modern alternatives like HashMap
📌 Example Use Case: Storing user data like: 👉 ID → Name
👉 ProductCode → Price
🔥 One-liner for reel: “Hashtable stores data in key-value form and uses hashing for lightning-fast access!” ⚡

Видео HASH TABLE IN JAVA || JAVA INTERVIEW QUESTIONS канала Java Programming