Null pointer exception with linked hashmap

Question

Crashlytics is showing a few crashes on the following line:

if(appObj.getStationsList().get(tag)!=null){

getStationsList() returns a LinkedHashMap<String, StationInfo>. How can I avoid getting this error? It's ironic that my very check to avoid this error actually resulted in it.

`appObj.getStationsList()` is `null` and you're not checking that... — Luiggi Mendoza, May 13 '14 at 13:49

score 0 · Accepted Answer · answered May 13 '14 at 13:51

0

You will have to check:

if(appObj.getStationsList()==null)

answered May 13 '14 at 13:51

f.leno

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7

Macrosoft-Dev · Answer 2 · 2014-05-13T14:12:33.947

0

replace

if(appObj.getStationsList().get(tag)!=null){

with

 if(appObj.getStationsList() !=null && appObj.getStationsList().get(tag)!=null){

}

edited May 13 '14 at 14:12

answered May 13 '14 at 13:52

Macrosoft-Dev

2,157
1
9
15

This line is symbolic Object obj = appObj.getStationsList(); Object should be replaced with station and also must be upcast while getting – Macrosoft-Dev May 13 '14 at 14:12
see edited answer and remove downcast vote – Macrosoft-Dev May 13 '14 at 14:13
When providing answers, provide compilable code or post that you're showing pseudocode. – Luiggi Mendoza May 13 '14 at 14:13
now if it solve your problem then upvote – Macrosoft-Dev May 13 '14 at 14:14
Are you giving me orders or what? – Luiggi Mendoza May 13 '14 at 14:14

Null pointer exception with linked hashmap

2 Answers2