Answers for "check if key exists in dictionary 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

java check if key exists in list

if (lista.contains(conta1)) {
    System.out.println("Account found");
} else {
    System.out.println("Account not found");
}

Posted by: Guest on December-05-2020

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