file:1_2_1_18_定义一个标准的类.flv file:1_2_1_15_练习使用private关键字定义.flv file:1_2_1_13_面向对象三大特征之封装性.flv file:1_2_1_12_成员变量和局部变量的区别.flv file:1_2_1_09_两个引用指向同一个对象的.flv file:1_1_9_08_选择结构_穿透的switch.flv file:1_1_9_06_练习_用if语句替换三元运.flv file:1_1_9_01_流程概述与顺序结构.flv file:1_1_8_16_编译器的两点优化.flv file:1_1_8_15_JDK9的JShell简单使用.flv file:1_1_7_14_方法入门_方法的调用.flv file:1_1_6_09_比较运算符.flv file:1_1_5_03_数据类型转换_注意事项.flv file:1_1_2_13_程序注释与HelloWorld.flv file:1_1_1_08_JDK的下载与安装.flv