Question

I working on a project where I have to connect the specific database based on the bank_name.I am using java,struts2,hibernate.
for example:

{'sbi': 
   {'host':'111.111.15.45','port':3306,'username':'xxxx','password':'xxxx','database':'sbidb'}

Here sbi is a bank_name which is a key,then as a value there is another map. so I want to retrieve all values such as host,port,db based on bank_name(ex: ‘sbi’).
How to achieve this?

Answer 1

This is simple.

You Map is something like this:

 Map<String, Map<String, String>> map = new HashMap<String, Map<String, String>>();
 .....

Now you can retrieve the key value pair from inner map as below:

  Map<String,String> sbiMap = map.get("sbi");
  Set<String> keys = sbiMap.keySet();
  for(String key: keys){
    System.out.println("key="+key+" value = " + sbiMap.get(key));
  }

This will print all inner keys and corresponding values in the map for sbi.