in JAVA by
What is an elective course?

1 Answer

0 votes

Java 8 introduced the optional class, a special wrapping class designed to prevent NullPointerExceptions. This last class can be found in the java.util package. When we don't do the Null checks, NullPointerExceptions happen.

Related questions

0 votes
asked Jun 28, 2020 in Agile by anonymous