Java02
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The document provides an overview of basic Java concepts including: 1. Classes define data (fields) and code (methods) to represent objects, with fields accessible via getters/setters and methods operating on the fields. 2. Inheritance allows subclasses to extend existing classes, reusing and overriding their methods and fields. 3. Abstract classes define common interfaces for subclasses through abstract methods without bodies, while concrete subclasses implement the methods.
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Java02
- 1. JAVA BASICS
- 3. An example of a class class Person { String name; int age; void birthday ( ) { age++; System.out.println (name + ' is now ' + age); } } Variable Method
- 10. Example Programs
- 11. Echo.java C:MBC31ava>type echo.java // This is the Echo example from the Sun tutorial class echo { public static void main(String args[]) { for (int i=0; i < args.length; i++) { System.out.println( args[i] ); } } } C:MBC31ava>javac echo.java C:MBC31ava>java echo this is pretty silly this is pretty silly C:MBC31ava>