Submitted by: Submitted by phragix
Views: 523
Words: 432
Pages: 2
Category: Science and Technology
Date Submitted: 03/23/2009 01:31 AM
About “Programming Language”
• Human understands human language.
• Computer understands machine language.
• Human uses computer software as an interface to perform various operations on computers.
• Computer software is built by software developers using programming language.
• A written text using programming language is called source code.
• Programming language is a tool used to built computer software which acts as an interface between users and computers.
About “Object-Oriented Programming (OOP)”
• Object-Oriented is a way to imagine things as objects.
• Object-Oriented Programming (OOP) is a programing language that allows object-oriented methodology to be used in software building.
• A complex function often consists of a large set of simple functions. Software developers could think of each simple function as an object. By combining those simple functions, a complex function can be built easily.
About “Java Platform”
• Java is an Object-Oriented Programming (OOP) language.
• Java platform consists of the Java Application Programming Interfaces (APIs) and the Java Virtual Machine (JVM).
• APIs are libraries of compiled code that developers can use in their programmes in order to save the programming time.
• JVM is a programme which acts like an interpreter.
• To build a software using Java, developers need to write a source code using java programming language, then compile it using a java compiler and finally run it with JVM.
• Java is platform independent. It means that once a source code is compiled, it can be run by JVM on any operating system.
About “Java Software”
• Java software is a compiled source code.
• Java source code may consists of one or several java classes.
• Each class may contain methods and/or attributes.
• Methods are just like functions.
• Attributes are just like variables.
• There MUST be ONE and the ONLY ONE class contains the main method.
• The programme starts from the first line of main method and...