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Core Date-Time Classes in Java 8 Java's traditional date and time handling prior to Java 8 presented challenges due to unintuitive design and thread safety concerns in java.util.Date and java.util.Calendar. The Java 8 Date-Time API introduced immutable, thread-safe alternatives including LocalDate, LocalTime, and LocalDateTime. Date Handling wi ...

Method referecnes in Java 8 provide a concise syntax to refer directly to methods or constructors without executing them. They are useful when a lambda expression merely calls an existing method, allowing the code to be more readable and reusable. Consider a Person class: public class Person { public enum Sex { MALE, FEMALE } String na ...