Hashmap edit

[robin sa]

Hi there,
I have the following mapping at the moment with a json lib.

    String Library = "{\"Library\": {\"Books\": [ {\"Author\": \"Andrew\",
\"ISBN\": \"1111\"},{\"Author\": \"Barry\", \"ISBN\": \"2222\"},
{ \"Author\": \"Carys\",\"ISBN\": \"3333\" },  {  \"Author\": \"Diana
\", \"ISBN\": \"4444\" } ]}}";

<HashMap <String, HashMap<String, List<HashMap<String, String>>>>>

I wanted to add the field 'State' as a child of Library alongside
Books.

Such as.

 
 String Library = "{\"Library\": {\"State\": \"New Jersey\",\"Books\":
[ {  \"Author\": \"Andrew\", \"ISBN\": \"1111\"},{\"Author\": \"Barry
\", \"ISBN\": \"2222\" }, {  \"Author\": \"Carys\",\"ISBN\":
\"3333\"  }, {  \"Author\": \"Diana\",  \"ISBN\": \"4444\"  }  ]}}";
 

Any info on mapping additional field would be great.

Thanks

Robin

[Martijn Verburg]

Hi Robin and welcome to Javaranch!

What JSON lib are you using?

[robin sa]

Thanks.

GSON

Type HashLib = new TypeToken<HashMap <String, HashMap<String, List<HashMap<String, String>>>>>() {}.getType();