Throughout the years as technology is continuing to evolve, so are the aspects of controversy within the structure itself. Here are some of my results through research.Part $1$: Useful Java Built$-$In ClassesJava provides a plethora of prewritten classes that simplify various programming tasks. Here are three useful built$-$in classes from the Java documentation:$1.$ ArrayList: $-$Description: The $`$ArrayList$`$ class is part of the Java Collections Framework and provides a resizable array implementation. It allows for dynamic array management, including adding, removing, and accessing elements. $-$ Applications: $`$ArrayList$`$ is highly versatile and can be used in applications requiring dynamic data storage. Examples include managing lists of user inputs, storing temporary data in web applications, and handling collections of objects in gaming applications$\mathrm{.}2.$ HashMap: $-$ Description: The $`$HashMap$`$ class implements the $`$Map$`$ interface, providing a key$-$value data structure. It allows for fast retrieval, insertion, and deletion of elements based on unique keys. $-$ Applications: $`$HashMap$`$ is ideal for applications needing quick access to data based on keys. Use cases include caching data, implementing lookup tables, and managing user sessions in web applications$\mathrm{.}3.$ File: $-$ Description: The $`$File$`$ class represents file and directory pathnames in an abstract manner. It provides methods for creating, deleting, and manipulating files and directories. $-$ Applications: The $`$File$`$ class is essential for applications involving file operations. Examples include reading and writing files in desktop applications, managing file uploads and downloads in web applications, and logging data in server$-$side applications.Part $2$: Controversies Surrounding Complex Computer GamesGrand Theft Auto and Stubbs the Zombie$1.$ Descriptions: $-$ Grand Theft Auto $($GTA$)$: GTA is an open$-$world action$-$adventure game series known for its immersive gameplay, detailed environments, and controversial content. Players can engage in criminal activities, including theft, violence, and exploration of a fictional city. $-$ Stubbs the Zombie: This game is a third$-$person action game where players control Stubbs, a zombie, to wreak havoc in a retro$-$futuristic city. The game is known for its dark humor and unique perspective, allowing players to experience gameplay as a zombie$\mathrm{.}2.$ Opposition to These Games: $-$ Violence and Crime: Critics argue that games like GTA promote violence, crime, and morally questionable behavior. The realistic depiction of illegal activities can influence impressionable players, leading to real$-$world behavioral issues. $-$ Graphic Content: Both games feature graphic content, including violence, gore, and explicit language, which many believe is unsuitable for younger audiences$\mathrm{.}3.$ Personal Opinion and Age Restrictions: $-$ Approval of Playing: While these games offer immersive and engaging experiences, I believe their content should be approached with caution. They can be enjoyed by mature audiences who understand the fictional nature of the gameplay and can distinguish it from real$-$life behavior. $-$ Age Restrictions: I would impose age restrictions on these games, recommending them for players aged $17$ and above $($Mature rating$)$ due to their graphic and mature content. Parental guidance and awareness are crucial to ensure that these games are played responsibly.