分享兴趣，传播快乐，增长见闻，留下美好！
亲爱的您，这里是LearningYard学苑。今天小编为大家带来“学习知多少：java篇”，欢迎您的访问。
Share interests, spread happiness, increase knowledge, and leave a good legacy!
Dear you, this is The LearningYard Academy. Today Xiaobian brings you "Learn how much to know ：Java chapter”, welcome your visit.
一、思维导图
二、简介
二. Introduction
在编写代码过程中，我们会从基础的C语言开始学起，然后逐步进阶，而JAVA虽然比C语言稍微进阶一些，但仍然是一门基础性的编程语言。
As we write code, we start with the basic C language and work our way up. JAVA is a little bit more advanced than C, but it's still a basic programming language.
Java 是由 Sun Microsystems 公司于 1995 年 5 月推出的 Java 面向对象程序设计语言和 Java 平台的总称。由 James Gosling和同事们共同研发，并在 1995 年正式推出。后来 Sun 公司被 Oracle （甲骨文）公司收购，Java 也随之成为 Oracle 公司的产品。
Java is the umbrella term for Java object-oriented programming language and Java platform launched by Sun Microsystems in May 1995. Developed by James Gosling and colleagues, it was launched in 1995. Sun was later acquired by Oracle (ORCL), and Java became an Oracle product.
Java分为三个体系：
JavaSE（J2SE）（Java2 Platform Standard Edition，java平台标准版）
JavaEE(J2EE)(Java 2 Platform,Enterprise Edition，java平台企业版)
JavaME(J2ME)(Java 2 Platform Micro Edition，java平台微型版)
Java is divided into three systems:
JavaSE (J2SE) (Java2 Platform Standard Edition, java Platform Standard Edition)
JavaEE(J2EE)(Java 2 Platform,Enterprise Edition, java Platform Enterprise Edition)
JavaME(J2ME)(Java 2 Platform Micro Edition, java Platform Micro Edition)
在2005 年 6 月，JavaOne 大会召开，SUN 公司公开 Java SE 6。此时，Java 的各种版本已经更名，以取消其中的数字 "2"：J2EE 更名为 Java EE，J2SE 更名为Java SE，J2ME 更名为 Java ME。
In June 2005, at the JavaOne conference, SUN unveiled Java SE 6. By this time, the various versions of Java had been renamed to remove the number "2" : J2EE was renamed Java EE, J2SE was renamed Java SE, and J2ME was renamed Java ME.
三、发展历史
三. Development History
JAVA的发展历史较短，二十几年的历程，将其从一个不成熟的编程语言逐渐成为一门体系完整的编程语言。
The development history of JAVA is relatively short, more than 20 years, from an immature programming language gradually into a system of complete programming language.
1995 年 5 月 23 日，Java 语言诞生
1996 年 1 月，第一个 JDK-JDK1.0 诞生
1996 年 4 月，10 个最主要的操作系统供应商申明将在其产品中嵌入 JAVA 技术
1996 年 9 月，约 8.3 万个网页应用了 JAVA 技术来制作
1997 年 2 月 18 日，JDK1.1 发布
1997 年 4 月 2 日，JavaOne 会议召开，参与者逾一万人，创当时全球同类会议规模之纪录
1997 年 9 月，JavaDeveloperConnection 社区成员超过十万
1998 年 2 月，JDK1.1 被下载超过 2,000,000次
1998 年 12 月 8 日，JAVA2 企业平台 J2EE 发布
1999 年 6月，SUN 公司发布 Java 的三个版本：标准版（JavaSE, 以前是 J2SE）、企业版（JavaEE 以前是 J2EE）和微型版（JavaME，以前是 J2ME）
2000 年 5 月 8 日，JDK1.3 发布
2000 年 5 月 29 日，JDK1.4 发布
2001 年 6 月 5 日，NOKIA 宣布，到 2003 年将出售 1 亿部支持 Java 的手机
2001 年 9 月 24 日，J2EE1.3 发布
2002 年 2 月 26 日，J2SE1.4 发布，自此 Java 的计算能力有了大幅提升
2004 年 9 月 30 日 18:00PM，J2SE1.5 发布，成为 Java 语言发展史上的又一里程碑。为了表示该版本的重要性，J2SE1.5 更名为 Java SE 5.0
2005 年 6 月，JavaOne 大会召开，SUN 公司公开 Java SE 6。此时，Java 的各种版本已经更名，以取消其中的数字 "2"：J2EE 更名为 Java EE，J2SE 更名为 Java SE，J2ME 更名为 Java ME
2006 年 12 月，SUN 公司发布 JRE6.0
2009 年 04 月 20 日，甲骨文 74 亿美元收购 Sun，取得 Java 的版权。
2010 年 11 月，由于甲骨文对于 Java 社区的不友善，因此 Apache 扬言将退出 JCP。
2011 年 7 月 28 日，甲骨文发布 Java7.0 的正式版。
2014 年 3 月 18 日，Oracle 公司发表 Java SE 8。
2017 年 9 月 21 日，Oracle 公司发表 Java SE 9
2018 年 3 月 21 日，Oracle 公司发表 Java SE 10
2018 年 9 月 25 日，Java SE 11 发布
2019 年 3 月 20 日，Java SE 12 发布
On May 23, 1995, the Java language was born
In January 1996, the first JDK-JDK1.0 was born
In April 1996, ten major operating system vendors announced that they would embed JAVA technology in their products
In September 1996, about 83,000 web pages were created using JAVA technology
On February 18, 1997, JDK1.1 was released
On April 2, 1997, the JavaOne Conference was held with over 10,000 participants, which was then the largest conference of its kind in the world
In September 1997, the Java Development Connection community had more than 100,000 members
In February 1998, JDK1.1 was downloaded over 2,000,000 times
On December 8, 1998, the JAVA2 enterprise platform J2EE was released
In June 1999, SUN released three versions of Java: Standard Edition (JavaSE, formerly J2SE), Enterprise Edition (JavaEE, formerly J2EE), and Micro Edition (JavaME, formerly J2ME).
On May 8, 2000, JDK1.3 was released
On May 29, 2000, JDK1.4 was released
On June 5, 2001, NOKIA announced that it would sell 100 million Java-enabled mobile phones by 2003
On September 24, 2001, J2EE1.3 was released
On February 26, 2002, J2SE1.4 was released, and since then Java's computing power has improved dramatically
At 18:00PM on September 30, 2004, J2SE1.5 was released, becoming another milestone in the development history of Java language. In recognition of the importance of this release, J2SE1.5 was renamed Java SE 5.0
In June 2005, at the JavaOne Conference, SUN unveiled Java SE 6. By this time, the various versions of Java had been renamed to remove the number "2" : J2EE was renamed Java EE, J2SE was renamed Java SE, and J2ME was renamed Java ME
In December 2006, SUN released JRE6.0
On April 20, 2009, Oracle bought Sun for $7.4 billion, acquiring Java rights.
In November 2010, Apache threatened to quit JCP because of Oracle's unkindness to the Java community.
On July 28, 2011, Oracle released the official version of Java7.0.
On March 18, 2014, Oracle announced Java SE 8.
On September 21, 2017, Oracle announced Java SE 9
On March 21, 2018, Oracle announced Java SE 10
On September 25, 2018, Java SE 11 was released
On March 20, 2019, Java SE 12 was released
看了以上内容，相信你对JAVA语言已经有一定了解了，下面我们来看一个简单的案例。
After reading the above content, I believe you have a certain understanding of the JAVA language, let's look at a simple case.
今天的分享就到这里了。
如果您对今天的文章有独特的想法,
欢迎给我们留言，
让我们相约明天。
祝您今天过得开心快乐！
That's all for today's sharing.
If you have a unique idea for today’s article,
please leave us a message,
and let us meet tomorrow.
I wish you a happy day !
本文由learningyard新学苑原创，如有侵权，请联系我们！
翻译来源于谷歌翻译
部分来源于
百度文库
清华大学出版 董付国《Python程序设计基础》
编辑&排版|百味
审核|闫庆红