Teach Yourself Java in 21 Days

Day

6

Creating Classes and Applications in Java

95

Defining Classes ....................................................................................... 96

Creating Instance and Class Variables ....................................................... 96

Defining Instance Variables ................................................................. 97

Constants ............................................................................................. 97

Class Variables ..................................................................................... 98

Creating Methods ..................................................................................... 99

Defining Methods ............................................................................... 99

The this Keyword ............................................................................... 101

Variable Scope and Method Definitions ............................................ 101

Passing Arguments to Methods .......................................................... 102

Class Methods ................................................................................... 104

Creating Java Applications ...................................................................... 105

Java Applications and Command-Line Arguments ................................. 106

Passing Arguments to Java Programs .................................................. 106

Handling Arguments in Your Java Program ....................................... 106

Summary ................................................................................................ 108

Q&A ...................................................................................................... 109