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

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

creates a binding to an empty string, and then dumps it completely by re-initializing it.

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

creates the binding and leaves it.

The first one is unnecessary. Just go with the direct string literal.