Java 8 null check chain

In a nutshell, the Optional class includes methods to explicitly deal with the cases where a value is present or absent. However, the advantage compared to null references is that the Optional class forces you to think about the case when the value is not present .

In a nutshell, the Optional class includes methods to explicitly deal with the cases where a value is present or absent. However, the advantage compared to null references is that the Optional class forces you to think about the case when the value is not present .

Using … != null still is the way to do it in Java 8 and even Java 11.7 Eyl 2018

Using … != null still is the way to do it in Java 8 and even Java 11.7 Eyl 2018

Use “==” to check a variable’s value. If you set a variable to null with “=” then checking that the variable is equal to null would return true . variableName == null; You can also use “!= ” to check that a value is NOT equal.

Use “==” to check a variable’s value. If you set a variable to null with “=” then checking that the variable is equal to null would return true . variableName == null; You can also use “!= ” to check that a value is NOT equal.