関連ワード:  how to get values in hashmap java    how to access values in hashmap java    how to find value in hashmap java    how to get all values in hashmap java    how to get max value in hashmap java    how to get key value in hashmap java    how to get first value in hashmap java    how to get highest value in hashmap java    how to access elements in hashmap java    how to get values from hashmap in java 8 example