Object-oriented programming uses classes and objects to model real-world items. Classes allow for the creation of objects that encapsulate both data and functions that can act on that data. OOP also supports method overloading which allows methods of the same name to be defined with different parameters.
This document discusses programming concepts including variables, reserved words, mathematical operators, conditional statements like if, if-else, if-else if-else, nested if, and switch statements. It provides examples of using variables to store values, comparing values, and changing program flow based on conditional logic. Key programming structures are defined including if, if-else, and switch statements with break to control program execution based on different conditions being true.
The X-47B unmanned aircraft conducted its first launch and recovery aboard an aircraft carrier, the USS George Washington. The cutting-edge stealth drone is being developed by Northrop Grumman as a future "carrier-based system" that could conduct missions in place of piloted jets. Some observers have referred to aircraft like the X-47B as a "carrier killer" due to its ability to operate autonomously from an aircraft carrier.
1. The Internet originated from ARPANET, a US Department of Defense network developed in the 1960s. It evolved to include universities, companies and the public.
2. TCP/IP was established as the standard communication protocol in 1983, allowing interoperability between different networks. This led to rapid growth of the Internet.
3. Key applications and technologies that emerged include email, file transfer, World Wide Web, instant messaging, online gaming and e-commerce. The Internet continues to impact society through new applications and greater accessibility.