javanulloption-type

Use Optional instead of a null check

I have this code:

if (myClass != null){
    myClass2.setId(myClass.getId());
    myClass2.setName(myClass.getName());
    myClass2.setPosition(myClass.getPosition());
}

I want to replace this code to this:

Optional.ofNullable(myClass)

and map this field from myClass to myClass2.

How I can do it?

Solution

  • Did you mean to use:

    Optional.ofNullable(myClass)
        .ifPresent(m -> {
            myClass2.setId(m.getId());
            myClass2.setName(m.getName());
            myClass2.setPosition(m.getPosition());
        });

    For mapping I would suggest to read about MapStruct, it is a good tool.