java11下载安装
https://www.oracle.com/in/java/technologies/javase/jdk11-archive-downloads.html
doc：JDK 11 Documentation - Home (oracle.com)
环境配置：https://blog.csdn.net/m0_52861000/article/details/127924915
https://jdk.java.net/java-se-ri/11-MR2
没有jre：bin\jlink.exe --module-path jmods --add-modules java.desktop --output jre
