OKdevTV
Java
- 1995 James Gosling
- 1996 Sun Microsystems > Oracle Corporation(2010)
JDK, JRE
- Java Development Kit
- Java Runtime Environment
- JDK = JRE + javac
Version LTS
| Release Family | End Of Support Life (EOSL) |
|---|---|
| 18 | September 2022(1) |
| 17 LTS | September 2029 |
| 16 | September 2021 |
| 15 | March 2021 |
| 14 | September 2020 |
| 13 | March 2020 |
| 11 LTS | September 2026 |
| 10 | September 2018 |
| 9 | March 2018 |
| 8 LTS | December 2030 |
| 7 LTS | July 2022 |
| 6 LTS | December 2018 |
| 5 LTS | July 2015 |
| 4 LTS | March 2013 |
| 3 LTS | April 2011 |
| 2 LTS | December 2003 |
| 1 LTS | October 2002 |
Install
- sdkman recommended
- https://github.com/ojdkbuild/ojdkbuild
- CentOS
yum list | grep jdk
sudo yum remove java-1.7.0-openjdk.x86_64 -y
sudo yum install java-1.8.0-openjdk-devel.x86_64 -y
- Ubuntu openjdk
sudo add-apt-repository ppa:openjdk-r/ppa
sudo apt-get update
sudo apt-get install openjdk-8-jdk -y
- Ubuntu oracle-jdk
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer
sudo apt-get install oracle-java8-set-default
- mac
export JAVA_HOME="$(/usr/libexec/java_home -v 1.8)"
- 자바의신 1권 36p
기본 용어
패키지(package)
클래스(class)
메소드(method)
명령문(statement)
자바의신 1권 20p
들여쓰기(indent)
예약어(reserved word)
Other topic
- inheritance
- interface
- generic
- autoboxing
- annotation
- lambda
- future
- jdbc
- junit
- tomcat
- war
- deploy
- maven
- gradle
- ant
- lombok
- httpclient
- excel
참고
- 2시간만에 자바 시작
- 2시간만에 자바를 쉽게 배우고 싶어요.
- kenu's java
