如何在ubuntu linux下按装Java

[eric.yin]

你好，我是一个新手，我打算在ubuntu下按装Java，这方面我了解的不多，求助！！！

[TeliuTe]

试试在论坛右上角搜索框里搜索“安装java”，可以搜到一些相关的帖子

[poloshiao]

viewtopic.php?p=3101557#p3101557

[wutong]

一个命令即可：

代码： 全选

sudo apt-get install openjdk-7-jdk 

或者

代码： 全选

sudo apt install openjdk-7-jdk

[wutong]

不需要ppa

[wutong]

代码： 全选

yuan@yuan-Lenovo:~$ sudo apt install openjdk-7-jdk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
openjdk-7-jdk is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

[wutong]

這个java 与甲骨文的java 不是一个软件，但是使用上没有区别。

[wutong]

你可搜一下openjdk 和 jdk 的区别。

[wutong]

代码： 全选

yuan@yuan-Lenovo:~$ java -version
java version "1.7.0_65"
OpenJDK Runtime Environment (IcedTea 2.5.1) (7u65-2.5.1-4ubuntu1~0.14.04.2)
OpenJDK Server VM (build 24.65-b04, mixed mode)

[poloshiao]

openjdk 和 jdk 的区别。

http://stackoverflow.com/questions/2235 ... collection
Differences between Oracle JDK and Open JDK and garbage collection

http://stackoverflow.com/questions/1154 ... re-openjdk
The OpenJDK is the open-source implementation of the Java SE 7 JSR (JSR 336). Now there is almost no difference between the Oracle JDK and the OpenJDK. Last year, Oracle took this decision : Moving to OpenJDK as the official Java SE 7 Reference Implementation