Question

   for (Entry<String, String> entry : map.entrySet()) {

                String delimiter = "**";
                result = result.replace(delimiter + entry.getKey() + delimiter, entry.getValue());

            }

result is my string to be replaced by hashmap values.
Here string (result variable) is returning as itself not replacing any value.
Please any one have suggestions ?

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From comment

My hashmap contains,

HashMap<String, String> map = new HashMap<String, String>(); 
map.put("Rid", serviceBooking.getId().toString()); 
map.put("Rname", customer.getName()); 
map.put("Rnic", "");

Answer 1

The algorithm OK Here’s a working, executable example:

// sample input
String input = "abcd **Rid** efgh";

// a small map
Map<String, String> map = new HashMap<String, String>();
map.put("Rid","VALUE");

// the loop that replaces the **Rid** substring
for (Map.Entry<String,String> entry:map.entrySet()){
  input = input.replace("**"+entry.getKey()+"**", entry.getValue());
  System.out.println(input);
}

It prints

abcd VALUE efgh