interface short true catch final long static try char fianlly native strictfp void class float new super volatile continue for null switch while default if package synchronized 注:java 无sizeof ,goto, const 关键字,但不能用goto const作为变量名 1.2.3 数据类型 数据类型 基本数据类型 引用数据类型 ...
public class InterfaceTester { public static void main(String args[]){ Rectangle rect=new Rectangle(5,6); System.out.println("Area of rect = " + rect.area()); Circle cir=new Circle(2.0); System.out.println("Area of cir = " + cir.area()); } } 运行结果 Area of rect = 30.0 Ar...
For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not...
The SSH framework is the organic integration of Struts, spring and Hibernate three kinds of technology, is currently the most widely used Java EE architecture. In the framework of the SSH, the Struts is to provide the MVC model, the interface, business logic and data separation, and provides...
一进入用户界面(UserInterface,UI)主题设置界面,可以选择自己喜欢的 风格,这里选择Light风格。单击“Next”按钮。; ·配置AndroidStudio 一进入AndroidSDK下载界面,引导程序将自动下载SDK -要保证计算机已联网)。 -注意:AndroidSDK的安装路径不能包含中文字符。 AndroidStudioSetupWiaard; Androld移动应用开发AndroidStudio的...
JMI作用: •Java API for handling models(Interfaces providing operations) •Develop a CASE tool for handling a model = develop a program using (invoking) the API 分两类: •Reflective •Provides means to dynamically discover information on a model element (i.e., access to its meta-class...
编译运行java文件 编译型和解释型 注释 标识符 数据类型 强类型数据 弱类型语言 java的数据类型分为两大类 1.基本类型 2.引用类型 整数扩展 浮点数扩展 字符扩展 布尔值拓展 类型转换 精度排列 强转(类型)变量:高到低 自动(类型)转换:低到高 变量 作用域 常量 命名原则 运算符 包机制 javadoc idea生成javaDoc...
By utilizing IT technology, the gerocomium management system could provide an interface for information management, such as storage of elder’s information, look up and update information, which could save the working hours of staff and reduce the cost. The development of the gerocomium ...
Exceptioninthread"main"java.lang.IncompatibleClassChangeError: Foundclassorg.apache.poi.util.POILogger, butinterfacewas expected 这个错误最可能的原因是poi的jar包使用了多个版本 使用下面的方法可以查看具体使用的哪里的jar包 (在网上找的,但是版本不同,第三段 org.apache.poi.hslf.HSLFSlideShow.class.getClass...
“$”和数字符号 大小写敏感 不能与保留关键字冲突 没有长度限制 例如:identifier _sys_ var1 $char userName user_ name Java的标示符(续) 3,命名约定: 类名, 接口名 :每个单词的首字母应该大写 class MyFirstClass interface Weapon 字段、方法以及对象:第一个单词首字母应小写,其他单词首字母大写 boolean ...