Recognize that LocalDate , LocalTime , LocalDateTime , and ZonedDateTime are immutable and thread-safe.
Study the java.util.function package extensively. Master Predicate , Function , Consumer , Supplier , and their primitive variations (e.g., IntPredicate , LongConsumer ).
Preparation involves more than just reading a textbook; it requires practicing specific test-taking habits tailored to the IKM environment. Analyze Code Fragments Line-by-Line ikm java 8 test verified
How to implement behavior inside an interface using the default keyword.
Understand how to use them to treat functionality as a method argument. Recognize that LocalDate , LocalTime , LocalDateTime ,
Master asynchronous task chaining, combining multiple futures ( thenCombine , allOf ), and exception handling within asynchronous pipelines.
: Use Period for date-based time (days, months, years) and Duration for time-based time (seconds, nanoseconds). 6. Core Java Fundamentals Preparation involves more than just reading a textbook;
This section tests your ability to process collections efficiently: Stream creation ( stream() , parallelStream() ). Intermediate operations ( filter , map , flatMap , sorted ). Terminal operations ( collect , reduce , forEach , findFirst ). Lazy evaluation principles. 3. Optional Class Mastery of Optional to avoid NullPointerException : Creating Optional objects ( of , ofNullable , empty ).
Learn the built-in interfaces ( Predicate , Consumer , Function , Supplier ) inside java.util.function . B. The Stream API (Crucial) This is typically the heaviest section of the test.
If a question is too complex, make an educated guess and move on. Don't waste 10 minutes on one question.