Accessing keys and values from a map

To access all the keys from a map, use the keySet() method and to find all values from a map, use the values() method.

• keySet()

  Use the keySet() method to iterate through all keys in a map. For example, in a map of products and discounts, you can use keySet() to loop through all discounted products.



• values()

  Use the values() method to iterate through all values in a map. For instance, to find the maximum discount among all products, iterate through the values of the map and compare the discounts for each product to identify the one with the highest discount.

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