Additional Notes
What happens when you use put() with an existing key?
Track: Java
Topic: Collections
Focus: Map Interface and HashMap
Java: Map Interface and HashMap
Answer
The existing key's value is replaced with the new value.
When put() is called with a key that already exists in the map, the old value associated with that key is replaced by the new value. Think of updating a product's price in a catalog; the new price replaces the old one.
When put() is called with a key that already exists in the map, the old value associated with that key is replaced by the new value. Think of updating a product's price in a catalog; the new price replaces the old one.
Topics: Collections Java Map Interface and HashMap