Understanding Reference Types in Java: Classes, Interfaces, and Arrays Explained

Understanding reference types in Java is crucial for memory management and working with complex data structures. Reference types include classes, interfaces, and arrays, and they store references to objects rather than values. The key differences between primitive and reference types are their storage, mutability, comparison, and ability to be null. Reference variables can point to the same object, and changes through references impact the objects themselves. Mastering reference types is essential for writing robust Java code.