To override onCreateOptionsMenu() and onPrepareOptionsMenu() in Android Studio, use the following syntax: @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onPrepareOptionsMenu(Menu menu) { // Handle menu item selection, etc. return super.onPrepareOptionsMenu(menu); } Explanation: - onCreateOptionsMenu() is called once when the menu is created, and is used to inflate the menu layout. - onPrepareOptionsMenu() is called every time the menu is opened, and is used to handle menu item selection, etc. - Both methods must return a boolean value indicating whether the menu has been handled or prepared. By using this syntax, you'll be able to create and manage menus in your Android app with ease!

Linux differs from Windows and MacOS in several ways ¹:

• File System: Linux and MacOS use a similar file system derived from UNIX. Everything in the computer is considered a file, and all files are organized in directories that descend from a single root directory. Windows uses "drives" like C and D.
• Shell: Linux and MacOS use Bash as their default shell, while Windows has its own shell with different syntax.
• Package Manager: Linux and MacOS come with package managers that allow users to install, update and uninstall programs from the terminal. Windows does not come with a default package manager.
• Cost: Linux is completely free, Windows has a freemium model, and MacOS runs on Apple computers, which are pricey.
• Hardware Quality and Compatibility: Apple is responsible for the computers that MacOS runs on, which are known for being top quality. Linux and Windows can be installed on a wide range of computers.