Clarification on Ternary Shortenings involving Null in Java

[kkumardon]

This site: Information on the null constant in Java states that the following two statements are synonymous:\[code\]if(PossibleNullVariable!=null)PossibleNullVariable.Action();PossibleNullVariable!.Action();\[/code\]Also, This site: Information on avoiding null checks in Java states that these two statements are synonymous:\[code\]String str = getStringMayBeNull()!=null?getStringMayBeNull():"";String str = getStringMayBeNull() ?: