Encapsulation and Immutability: Protect Your Object's Rules | Java 2 #Shorts

Description: Your field is private and final. Can another caller still change its contents? This Java example shows why defensive copying matters.

Full lesson: Java Episode 2 - Encapsulation and Immutability: Protect Your Object's Rules

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Example notes: These are local object and collection examples, not a concurrent shipping service.

LEARNING REFERENCES
Java21 final fields and classes: https://docs.oracle.com/javase/specs/jls/se21/html/jls-8.html
Java21 List.copyOf and unmodifiable lists: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/List.html
Java21 record classes: https://docs.oracle.com/en/java/javase/21/language/records.html

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