Map.get() optimization in ?: ternary operator

Question

Consider the following code:

java.util.Map map = new java.util.HashMap();
...
String key = \"A\";
String value = map.         


        

Answer 1

Your second option which is :

String value = map.get(key);
if(value == null) {
    value = "DEFAULT_VALUE";
}

is better from first one reason:

1. You dont create an extra reference "tmp"

2. You dont execute else which you do as part of your ternary comparison.