Deep Copy a HashMap in Java and When a Shallow Copy Is Enough
Learn to deep copy a HashMap in Java with copy constructors, streams and serialization, and compare shallow copies with new HashMap, clone() and copyOf().
Java ArrayList clone(): Shallow Copy vs Deep Copy
Java ArrayList clone() creates a shallow copy. Learn how it differs from a deep copy and how to deep copy a list with copy constructors and streams.
Copy an Array in Java: Shallow Copy vs Deep Copy
Learn to copy an array in Java with clone(), Arrays.copyOf() and System.arraycopy(), and how to make deep copies of object arrays and 2D arrays.
Java Deep Copy Using In-Memory Serialization (With Examples)
Java deep copy using in-memory serialization with a generic helper, shared references, transient fields, SerializationUtils, real cost and alternatives.
How to Clone an Object in Java: Shallow vs Deep Copy
Clone an object in Java with Cloneable and clone() or, better, with a copy constructor. Learn shallow vs deep copy, cloning arrays and collections, deep copies with serialization and Jackson, and why records need no cloning.