Difference between revisions of "Optional Assignment"

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  <nowiki>public static Optional<Integer> maximum(ImmutableList<Integer> xs)</nowiki>
 
  <nowiki>public static Optional<Integer> maximum(ImmutableList<Integer> xs)</nowiki>
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Given a list of Integers, return [https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html#of-T- Optional.of] the maximum value in that list if it exists, otherwise return [https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html#empty-- Optional.empty].
  
 
=Test=
 
=Test=

Revision as of 13:00, 22 September 2020

Note this studio is required. It helps us gain experience using java.util.Optional<T>.

Code To Implement

Max

class: Max.java Java.png
methods: max
package: optional.assignment
source folder: src/main/java
public static Optional<Integer> maximum(ImmutableList<Integer> xs)

Given a list of Integers, return Optional.of the maximum value in that list if it exists, otherwise return Optional.empty.

Test

NOTE: in order to test this studio you must first complete the main (non-app) part of the ImmutableList<E> studio.

class: MaxTestSuite.java Junit.png
package: optional.assignment
source folder: src/test/java