Variable naming conventions in Java?

Question

In PHP, we (at least the good programmers) always start general variable names with a lower-case letter, but class variables/objects with an upper-case letter to distinguish them. In the same way we start general file names with a lower case letter, but files containing Classes with an upper case letter.

E.g:

<?php $number=123; $string="a string"; $colors_array=array('red','blue','red'); $Cat=New Cat(); ?> 

Are the conventions the same in java, i.e Objects starting with upper-case but the rest with lower case, or does everything start with lower case as I've read in other places?

Answer 1

You can find the naming in the Java Code Conventions.

A quick summary:

• For classes, use UpperCamelCase.
• For class members and local variables use lowerCamelCase
• For packages, use reverse URI, e.g. org.acme.project.subsystem
• For constants, use ALL_CAPS.