Java Learning (a) Basic syntax

I don't write about small points of knowledge, only more important or difficult to understand Naming conventions for names in 1.Java

Package Name: All letters are lowercase when multiple words are composed:xxxyyyzzz
Class name, Interface name: When multiple words are composed, the first letter of all words is capitalized:xxxyyyzzz
Variable name, method name: When multiple words are composed, the first letter is lowercase, the second word starts with the first letter of each word capitalized:xxxyyyzzz
Constant name: All letters are capitalized. Multiple words each word with an underscore connection:xxx_yyy_zzz

　　　　　　　　

　　

Java Learning (a) Basic syntax