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javaarrayscollectionshashmap

Java: how to convert HashMap<String, Object> to array


I need to convert a HashMap<String, Object> to an array; could anyone show me how it's done?


Solution

  • hashMap.keySet().toArray(); // returns an array of keys
    hashMap.values().toArray(); // returns an array of values
    

    Edit

    It should be noted that the ordering of both arrays may not be the same, See oxbow_lakes answer for a better approach for iteration when the pair key/values are needed.