Using Java If I have a Map$>()$ In which every given Key have some values $.$ Example a call to Key: Hi has Values:$("$Hola$",23),("$Hello$",09),("$Aloha$",90).$ Another Key : Name : has values: $("$Nombre$",23).$ How can I count the numbers of values a given key has. Like a call to count Key: Hi should return $3,$ because it has tree values. A call to Key: "Name" should return $1,$ because it has $1$ value