How to check value exists or not in the HashMap? | HashMap (ContainsValue)

In this Java Collection Framework tutorial, discover how to determine whether a specific value exists in a HashMap using the `containsValue()` method. The `containsValue()` method is useful for checking the presence of values in a HashMap.

**Key Topics Covered:**

- Explanation of the `containsValue()` method in HashMap
- Checking if a value exists in a HashMap using `containsValue()`
- Understanding the return value of `containsValue()` (true if value exists, false otherwise)
- Practical examples demonstrating the usage of `containsValue()` method with HashMap
- Handling scenarios where the specified value may or may not exist in the HashMap

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How to check value exists or not in the HashMap? | HashMap (ContainsValue)

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