Java 天地·Core Java·Lecture Notes·Unitt4 - Control of execution

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Content Page # 19

Identifier naming conventions

Although not actually a layout convention, another convention that can be very useful for improving program clarity is in the choice of identifiers (names). Classes, methods and variables have identifiers, and the conventional rules for their spelling (which we adopt for this module) are as follows:

classes start with the first letter capitalised, and have the first letter of each subsequent word capitalised too, for example:

String

BankAccount

TaxReturn

constructor methods start with a capital letter, and follow the same convention as for classes ?since a constructor method has to have the same name as the class. Examples could be:

String

BankAccount

RandomBall

variables and all other methods start with a lower case first letter, and have the first letter of each subsequent word capitalised, examples could be:

ageNextBirthday

getLoanBalance

toString

random

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