In Review

1. In Review JAVA C++ GUIs - Windows Webopedia.com

2. E.Q. What is JAVA?

3. JAVA • JAVA – an object oriented program (OOP) developed by Sun Microsystems was designed to be simple and architecture neutral so it could be used on a variety of hardware. • Used to write internet applets (graphical Java programs that execute inside a web browser)

4. Java application (program) – a package (library) with at least one class that contains a main method. • As a programmer YOU write the Java source code (program). • This must be translated – compiled – into language the computer understands –machine language in order for the program to execute – run. • Source code has the extension “.java” and compiled code has the extension “.class” • Compiled source code, called bytecode, is executed with the Java Virtual Machine, which can reside on any computer regardless of the operating system

5. Java – Object Oriented Programming (OOP) – uses objects and its interactions to design applications and computer methods. • OOP programmers will create modules – classes - which can be used over and over in many different programs.

6. Java applet – small program embedded in an HTML doc and run in a browser window. Program files are downloaded onto a user’s machine and the browser’s Java interpreter runs the applet. • Will run in many different platforms. • Secure because they can’t read or write to files on a person’s computer.

7. Review • When you write Java programs, you are creating the: • Executable file • Source code • Object code • Once you compile a program, you create the: • Executable file • Source code • bytecode

8. Source code has the file extension: • .jav • .class • .java • A Java application contains a package with at least one ___________. • library • object • class

9. Small Java apps which run in a browser window on any machine regardless of the operating system are called a(n): • Package • Source code • Applet • This type of programming uses objects and interactions: • GUI • OOP • Java virtual machine