> Java tends to allocate things separately and manipulate pointers, while Rust allocates things inline. This introduces allocation overhead and eats up the spac

> Java tends to allocate things separately and manipulate pointers, while Rust allocates things inline. This introduces allocation overhead and eats up the space needed by the pointers themselves. Just a small nit but the term you're looking for here is "value types". Rust does heap allocations(with the pointer overhead) via Box<T>, you just get explicit control over the overhead and cost.