Additional Notes
What happens when two keys in a HashMap have the same hash code?
Track: Java
Topic: Core Java
Focus: Code Reading with Collections
Java: Code Reading with Collections
Answer
HashMap stores collided elements in a linked list or tree structure.
When two keys produce the same hash code, a collision occurs. HashMap resolves this by storing collided entries in a linked list or a balanced tree (since Java 8), depending on the number of collisions. This ensures that even with collisions, the map remains functional and allows retrieval of entries.
When two keys produce the same hash code, a collision occurs. HashMap resolves this by storing collided entries in a linked list or a balanced tree (since Java 8), depending on the number of collisions. This ensures that even with collisions, the map remains functional and allows retrieval of entries.
Topics: Code Reading with Collections Core Java Java