[Java in NetBeans] Lesson 01. Java Programming Basics

Java编程基础

最新推荐文章于 2025-09-06 09:33:29 发布

转载最新推荐文章于 2025-09-06 09:33:29 发布 · 106 阅读

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原文链接：http://www.cnblogs.com/Johnsonxiong/p/9819289.html

文章标签：

#java

本文详细介绍了Java编程的基础知识，包括创建项目、使用jar文件、多行注释和单行注释的使用方法。此外，还讲解了类的概念，即对象的模板，以及public和private访问修饰符的区别。static关键字的作用也被提及，它可以让你在不定义实例的情况下使用方法。最后，文章强调了void关键字表示的方法不返回任何值。

这个课程的参考视频在youtube。

主要学到的知识点有：

Create new project, choose Java Application.
one .jar file/ package(.jar name with the same as package), one package can contains mutiple .java files.
Comment mutiple lines by using "/* */"; comment one line by using "//"

/*
*  This is example to comment mutliple lines
*/

// This is one line comment

A class is the template from which objects are created.
Object: Instance of a class.
public can be accessed by other class and private can not.
static means that you can use it without define it first. (also allow method to been used by other class without define an object)
void mens return nothing, like in C.
Statements should end with ;

转载于:https://www.cnblogs.com/Johnsonxiong/p/9819289.html