関連ワード:  how to set a hashmap in java    how to create a hashmap in java    how to create a hashmap in javascript    how to make a hash map in java    how to make a hash map in javascript    how to set up a hashmap in java    how to set a value in hashmap in java    how to create a new hashmap in java    how to make a hashmap synchronized in java    how to create a custom hashmap in java