Refactor multiple If' statements in Java-8

Question

I need to validate mandatory fields in my class

For example, 9 fields must not be null.

I need to check if they are all null but I

Answer 1

You can use javax.validator and hibernate.validator with @NotNull annotation on each field (or whichever field you want) on your excess POJO class. This combination provides an extensive pattern checking as well.

By this you don't have to do all the if checks explicitly. You can get ride of not only null checks but also pattern matching checks which can get scattered all over your code.