How to iterate through a hashmap in Java?
Understand the Problem
The question is asking about methods to traverse or loop through a HashMap in Java, which is a collection that maps keys to values. This involves understanding the different ways to access and manipulate the entries in a HashMap.
Answer
To iterate through a HashMap in Java, you can use entrySet(), keySet(), or values().
Here are examples for each method to iterate through a HashMap:
Answer for screen readers
Here are examples for each method to iterate through a HashMap:
More Information
Iterating through a HashMap using entrySet() is generally the most efficient way when you need to access both keys and values as it avoids multiple hash lookups.
Tips
A common mistake is trying to add or remove elements from the HashMap while iterating, which can cause a ConcurrentModificationException. Instead, use an Iterator's remove() method.
AI-generated content may contain errors. Please verify critical information
