Naming conventions make programs more understandable by making them easier to read.
Class names should be nouns, in mixed case with the first letter of each internal word capitalized. Interfaces name should also be capitalized just like class names.
To reduce the effort needed to read and understand source code.
To enable code reviews to focus on more important issues than arguing over syntax and naming standards.
To enable code quality review tools to focus their reporting mainly on significant issues other than syntax and style preferences.
| Identifiers Type | Description | Example |
|---|---|---|
| packages | Packages name should be in all lower case. | com.topperskills |
| interface | The interface name should start with a upper case character. | Runnable, MyInterfaceName |
| class | All the words of a class name should start with Upper case character | Object, String, MyClassName |
| method | Methods should be verbs, in mixed case with the first letter lowercase, with the first letter of each internal word capitalized. | print(), printMessage(), run(), actionPerformed() |
| variable | First word should be in lower case, Internal words start with capital letters. Variable names should not start with underscore _ or dollar sign $ characters, even though both are allowed. | rollNo, firstName, lastName, |
| contant | All characters should be in upper case. | PAN_NO, ADHAAR |