Apex Intermediate Progress | ( Lessons)

Lesson: 120 | containsKey(key)

Notes
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Notes

In Apex, the containsKey(key) method is used with a Map to check whether a specific key exists in the map. This method returns a Boolean value indicating whether the specified key is present in the map.

Here's an example:

Map<String, Integer> myMap = new Map<String, Integer>{
    'apple' => 5,
    'banana' => 3,
    'cherry' => 8
};

Boolean containsKey = myMap.containsKey('banana');

System.debug('Does the map contain the key? ' + containsKey);

Output: Does the map contain the key? true

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Lesson: 120 | containsKey(key)

Notes

Apex Intermediate