Notes
OOP in java (Defining and using class) Java is fundamentally Object-Oriented Every line of code you write in Java must be inside a Class (not counting import directives) Clear use of Variables Methods Re-use through “packages” Modularity, Encapsulation, Inheritance, Polymorphism etc. OOP Vocabulary Review Classes Definition or a blueprint of a userdefined datatype Prototypes for …
LAST LECTURE EXAMPLE File: HelloWorldApp.java public class HelloWorldApp{ public static void main(String[] args) { System.out.println(“Hello world”); } } THINGS TO REMEMBER Name of file must match name of class It is case sensitive Processing starts in main public static void main(String[] args) Printing is done with System.out System.out.println, System.out.print Compile with “javac” Open DOS/command prompt …
History Java Based on C and C++ Developed in 1991 for intelligent consumer electronic devices Green Project (According to Gosling, “the goal was … to build a system that would let us do a large, distributed, heterogeneous network of consumer electronic devices all talking to each other.” ) James Gosling Modified C++ Named Oak then …
What Is the World Wide Web? The internet is a network of computer networks worldwide The web is a tool used to retrieve information published on the internet To navigate the web we use a browser i.E. Netscape or internet explorer Brief History of the www 1968 – DARPA (Defense Advanced Research Projects Agency) contracts …
Computer Programming Language, any of various languages for expressing a set of detailed instructions for a digital computer. Such instructions can be executed directly when they are in the computer manufacturer-specific numerical form known as machine language, after a simple substitution process when expressed in a corresponding assembly language, or after translation from some “higher-level” …
Computer shortcut keys everyone should know: Word, Excel, Outlook, Windows shortcuts List of basic computer shortcut keys: Alt + F–File menu options in the current program. Alt + E–Edits options in the current program. F1–Universal help (for any sort of program). Ctrl + A–Selects all text. Ctrl + X–Cuts the selected item. Ctrl + Del–Cut …
Types of Application Software Web browsers Presentation software Spreadsheet software Graphic software Word Processors Database software Multimedia software Education software Information software Content access software Variants of Office StarOffice.org Apache OpenOffice LibreOffice Microsoft Office for Mac OS Microsoft Office for Windows MS Office Versions Release date Title Components November 19, 1990 The …
