関連ワード:  how to do a hashmap in java    how to create a hashmap in java    how to create a hashmap in javascript    how to make a hashmap in javascript    how to make a hash map in java    how to create a new hashmap in java    how to create a custom hashmap in java    how to get a hashmap value in java    how to create a static hashmap in java    how to create hashmap in java with values