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Dear you, this is The LearningYard Academy. Today Xiaobian brings you "Learn how much to know ：Java chapter”, welcome your visit.
一、思維導圖
二、簡介
二. Introduction
在編寫代碼過程中，我們會從基礎的C語言開始學起，然後逐漸進階，而JAVA雖然比C語言稍微進階一些，但仍然是一門基礎性的程式設計語言。
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 面向對象程式設計語言和 Java 平台的總稱。由 James Gosling和同僚們共同研發，并在 1995 年正式推出。後來 Sun 公司被 Oracle （甲骨文）公司收購，Java 也随之成為 Oracle 公司的産品。
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分為三個體系：
JavaSE（J2SE）（Java2 Platform Standard Edition，java平台标準版）
JavaEE(J2EE)(Java 2 Platform,Enterprise Edition，java平台企業版)
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 大會召開，SUN 公司公開 Java SE 6。此時，Java 的各種版本已經更名，以取消其中的數字 "2"：J2EE 更名為 Java EE，J2SE 更名為Java SE，J2ME 更名為 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、發展曆史
三. Development History
JAVA的發展曆史較短，二十幾年的曆程，将其從一個不成熟的程式設計語言逐漸成為一門體系完整的程式設計語言。
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 語言誕生
1996 年 1 月，第一個 JDK-JDK1.0 誕生
1996 年 4 月，10 個最主要的作業系統供應商申明将在其産品中嵌入 JAVA 技術
1996 年 9 月，約 8.3 萬個網頁應用了 JAVA 技術來制作
1997 年 2 月 18 日，JDK1.1 釋出
1997 年 4 月 2 日，JavaOne 會議召開，參與者逾一萬人，創當時全球同類會議規模之紀錄
1997 年 9 月，JavaDeveloperConnection 社群成員超過十萬
1998 年 2 月，JDK1.1 被下載下傳超過 2,000,000次
1998 年 12 月 8 日，JAVA2 企業平台 J2EE 釋出
1999 年 6月，SUN 公司釋出 Java 的三個版本：标準版（JavaSE, 以前是 J2SE）、企業版（JavaEE 以前是 J2EE）和微型版（JavaME，以前是 J2ME）
2000 年 5 月 8 日，JDK1.3 釋出
2000 年 5 月 29 日，JDK1.4 釋出
2001 年 6 月 5 日，NOKIA 宣布，到 2003 年将出售 1 億部支援 Java 的手機
2001 年 9 月 24 日，J2EE1.3 釋出
2002 年 2 月 26 日，J2SE1.4 釋出，自此 Java 的計算能力有了大幅提升
2004 年 9 月 30 日 18:00PM，J2SE1.5 釋出，成為 Java 語言發展史上的又一裡程碑。為了表示該版本的重要性，J2SE1.5 更名為 Java SE 5.0
2005 年 6 月，JavaOne 大會召開，SUN 公司公開 Java SE 6。此時，Java 的各種版本已經更名，以取消其中的數字 "2"：J2EE 更名為 Java EE，J2SE 更名為 Java SE，J2ME 更名為 Java ME
2006 年 12 月，SUN 公司釋出 JRE6.0
2009 年 04 月 20 日，甲骨文 74 億美元收購 Sun，取得 Java 的版權。
2010 年 11 月，由于甲骨文對于 Java 社群的不友善，是以 Apache 揚言将退出 JCP。
2011 年 7 月 28 日，甲骨文釋出 Java7.0 的正式版。
2014 年 3 月 18 日，Oracle 公司發表 Java SE 8。
2017 年 9 月 21 日，Oracle 公司發表 Java SE 9
2018 年 3 月 21 日，Oracle 公司發表 Java SE 10
2018 年 9 月 25 日，Java SE 11 釋出
2019 年 3 月 20 日，Java SE 12 釋出
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，相信你對JAVA語言已經有一定了解了，下面我們來看一個簡單的案例。
After reading the above content, I believe you have a certain understanding of the JAVA language, let's look at a simple case.
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翻譯來源于谷歌翻譯
部分來源于
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清華大學出版 董付國《Python程式設計基礎》
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