Java 安装配置

 

 

 

JDK下载地址：

https://www.oracle.com/technetwork/java/javase/downloads/jdk11-downloads-5066655.html

 

JDK API在线文档

https://www.oracle.com/technetwork/java/api-141528.html

 

• Java SE 9

https://docs.oracle.com/javase/9/docs/api/overview-summary.html

 

• Java SE 8

https://docs.oracle.com/javase/8/docs/api/

 

• Java EE 6

https://docs.oracle.com/javaee/6/api/

 

 

• JavaFX 2.0

https://docs.oracle.com/javafx/2/api/index.html

 

 

 

教程

https://docs.oracle.com/javase/tutorial/

 

JDK11 离线文档下载

https://www.oracle.com/technetwork/java/javase/documentation/jdk11-doc-downloads-5097203.html

 

JDK 8 离线文档下载，含 Java SE，JavaFx API

https://www.oracle.com/technetwork/java/javase/documentation/jdk8-doc-downloads-2133158.html

 

 

 

 

配置环境变量

计算机属性》高级系统设置-》高级-》环境变量-》Administrator的用户变量

CLASSPATH=.;C:\Program Files\Java\jdk1.8.0_131\lib\tools.jar;C:\Program Files\Java\jdk1.8.0_131\lib\dt.jar

JAVA_HOME=C:\Program Files\Java\jdk1.8.0_131

PATH=C:\Program Files\Java\jdk1.8.0_131\bin

 

 

内存参数

JAVA_OPTS=-Xmx128m  -Xms256m -Xmn2M  -Xss128k