Answers for "see if a key exists or not in map java"

check if map contains key java

if (map.containsKey(key)) {
       // Okay, there's a key but the value is null
    } else {
       // Definitely no such key
    }

Posted by: Guest on March-04-2020

key exist or not in map

if (m.count(key) > 0){
	cout << "key exist" << endl;
}

Posted by: Guest on December-20-2021

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