Atualizando valor de um HashMap

UpdateHashMap.java

public class UpdateHashMap { 
   public static void main(String [] args) {

        Map<String, String[]> formParameters = new HashMap<>();
        String[] a = new String[1];
        a[0] = "done";

        String[] b = new String[1];
        b[0] = "lua_çêéóú.JPG";

        formParameters.put("upload-original-div_0_name", b);
        formParameters.put("upload-original-div_0_status", a);

        if (formParameters.containsKey("upload-original-div_0_name")){
            String[] value =formParameters.get("upload-original-div_0_name");
            System.out.println("Initial Value =  " + value[0]);
            String[] newArray = new String[1];
            newArray[0] = "lua_ceeou.JPG";
            formParameters.put("upload-original-div_0_name",newArray);
        }

        System.out.println("Map updated ====");
        for (String[] key : formParameters.values()) {
            for (String string : key){
                System.out.println(key.toString() + " - " + string);
            }
        }

    }
}