Could you list the types of collections used in Java?

In Java, the main collection types include:

• List — an ordered list of elements that allows duplicates. Examples: ArrayList, LinkedList.
• Set — a collection of unique elements without a specific order. Examples: HashSet, TreeSet.
• Queue — a queue where elements are processed in FIFO order. Examples: LinkedList, PriorityQueue.
• Deque — a double-ended queue that allows adding and removing elements from both ends.
• Map — a collection of key-value pairs where keys are unique. Examples: HashMap, TreeMap.

Each collection type is suitable for different tasks depending on requirements for order, uniqueness, and access speed.