Does this Map contain this key?
Syntax
boolean containsKey(Object key)
Parameters
Key − The key used to search for.
Return Value
True or false depending on whether the key value is there or not.
Example
Following is an example of the usage of this method −
class Example {
static void main(String[] args) {
def mp = ["TopicName" : "Maps", "TopicDescription" : "Methods in Maps"]
println(mp.containsKey("TopicName"));
println(mp.containsKey("Topic"));
}
}
When we run the above program, we will get the following result −
true false
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