Java – Page 128 – Sharp: NCLEX, Java & Python

Java: Defensive Copying

What are the risks of shared mutable state in multi-threaded applications?

Why should internal collections not be exposed directly?

What does it mean for an object to be immutable?

How does defensive copying protect object integrity?

Why does returning a reference to a mutable internal collection change runtime behavior?

How does the private keyword support encapsulation?

How would you explain a design choice to promote object responsibility in an interview?

What design choices help prevent collection leaks?

What role does visibility play in encapsulation?

How do safe change paths benefit domain objects?