How to iterate List<Map<String,Object>> in java

Question

I have one List which contain one map i want to iterate is

List<Map<String, Object>> featureService=featureSubscriptionDao.getUnsubscribedSevice();

my dao method is

@Override
public List<Map<String, Object>> getUnsubscribedSevice() {
    String sql="select * from tblservice where public='false'";
    return getJdbcTemplate().queryForList(sql);
}

any help ?

Rob · Accepted Answer · 2011-04-23 09:55:50Z

12

List<Map<String, Object>> featureServices = getUnsubscribedSevice();

for (Map<String, Object> featureService : featureServices) {
    for (Map.Entry<String, Object> entry : featureService.entrySet()) {
       System.out.println(entry.getKey() + ": " + entry.getValue());
    }
}

edited Apr 23, 2011 at 9:55

Rob

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answered Apr 23, 2011 at 9:33

Hendrik Brummermann

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1 Comment

Datoraki Over a year ago

As opposed to corgraths solution, note how this one uses entryset instead of keyset to get the keys and values. This is better because one doesn't have to use get on the map (using the keys) to get the values (saving some time)

Dylan · Accepted Answer · 2020-07-11 00:47:49Z

0

In Java 8 you can simply use a lambda function.

    featureService.forEach(service -> 
                service.forEach((k, v) -> System.out.println(k + ": " + v)
   ));

edited Jul 11, 2020 at 0:47

Dylan

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answered Dec 6, 2016 at 23:27

Am1rr3zA

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Comments

Susheel kumar · Accepted Answer · 2020-10-30 21:42:15Z

0

Extract from the lists of the map:-

for (Map<String, Object> objectMap : cal.getMap_formula()) {
                        objectMap.keySet();//method 1st
                        objectMap.containsKey("key_name");//method 2nd
                        objectMap.get("key_name");//method 3rd
                    }

answered Oct 30, 2020 at 21:42

Susheel kumar

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