Dynamic Placeholder substitution in properties in java

Question

I wanted to substitute the placeholder dynamically in properties in a java application. Like

 WelcomeMessage=Welcome Mr. {firstName} {lastName} !!!
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Answer 1

One of the way is string substitutor:

WelcomeMessage=Welcome Mr. ${firstName} ${lastName} !!!

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Map valuesMap = new HashMap();
valuesMap.put("firstName", "ram");
valuesMap.put("lastName", "Kumar");
StrSubstitutor sub = new StrSubstitutor(valuesMap);
String message = sub.replace(WelcomeMessage);