Difference between Initializing string with new and “ ”

Question

Which one is correct and why:

String dynamic = new String();
dynamic = \" where id=\'\" + unitId + \"\'\";

Or

String dynamic = \" where id=\'\" + unitId + \"         


        

Answer 1

You can use like this.

StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("where id='");
stringBuilder.append(unitId);
stringBuilder.append("'");

String dynamic = stringBuilder.toString();