学习Java学后的相关内容

【个人学习JAVA---学后的梳理】五、JAVA的核心所在

Java的核心问渠哪得清如许，为有源头活水来... 语言的特性就是突出提示了它的核心关键所在。众所周知，Java语言是面向对象的程序设计语言。那么，对象是什么。。。 1. 面向对象程序设计对象，即某一类事物的一个具体的实体。有着完全相同特征的一群对象即一类事物。所以面向对象的程序设计是：程序 ...

【个人学习JAVA---学后的梳理】四、简单的一条语句

程序最小单位，语句积土成山，风雨兴焉... 一条语句，是程序的开始。条条简单语句的积累，就是复杂程序的组成。那么，语句是怎样构成的？语句的基本单位就是表达式与运算符。 1. 运算符 Java的运算符可分为4类：算术运算符、关系运算符、逻辑运算符和位运算符。 1.1. 需格外注意的运算符 '/'是...

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【个人学习JAVA---学后的梳理】三、浅纳Java的数据类型

Java数据类型的简单归纳打理，顺带补上常量与变量 1. 编程元素---常量与变量 1.1：常量顾名思义，常量就是固定不变的量（不变的是其直接对象地址），即：定义完成就无法被改变。声明常量的语法如下： final <数据类型> <常量名>[=赋值]; 进一步说明，常量的...

【个人学习JAVA---学后的梳理】二、关于JAVA程序的语法

认识Java程序 1. Java的一些基本规则和用法程序的框架自然需要遵守该语言的特定规则，规则包括对于一条语句的，代码块的，变量的命名等。符号的使用以西式字符为准，尽量少使用中式输入法输入符号。 1.1：大括号、段和主体类的主体，以左大括号'{'为开始标记、'}'右大括号为结束标记；其中每个...

【个人学习JAVA---学后的梳理】一、从外，观识JAVA

认识Java语言横看成岭侧成峰，远近高低各不同... 1. Java的历史 Java来自于Sun公司的一个Green项目，它期望能与家用电器进行信息交流，一开始是准备采用C++，不过C++太复杂，安全性差，于是最后基于C++开发了一种新语言Oak（Java的前身），该语言是一种用于网络的精巧而安全...

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