JAVA基础回顾 Part I：Java基础操作符

Jinhai‘s JAVA cheat sheet

Codecademy学习笔记 Part I

Java 基本数据类型

• int整数，范围在-2,147,483,648 and 2,147,483,647
• boolean，true或者false
• char，single character，使用单引号表示，例如char movieRating = 'A';

Java 注释

• 单行注释 single line comments

// I'm a single line comment!

• 多行注释 multi-line comments

/*

I'm a

multi-line line

comment!

*/

数学操作符 math operators
+-*/，以及取余%，例如21%5 = 1
比较操作符relational operators

1. < : less than.
2. <=: less than or equal to. 
3. >: greater than.  
4. >=: greater than or equal to.

等价操作符 equality operators

1. ==: equal to. 
2. !=: not equal to.