Ubuntu应用拓展（1）——ubuntu18.04系统运行java（RK3399）

安装javac

$ sudo apt-get install openjdk-8-jdk$ java -version
openjdk version "1.8.0_275"
OpenJDK Runtime Environment (build 1.8.0_275-8u275-b01-0ubuntu1~18.04-b01)
OpenJDK 64-Bit Server VM (build 25.275-b01, mixed mode)

编辑测试java程序

$ vi HelloWorld.java

public class HelloWorld{public static void main(String[] args){System.out.println("Hello World");}
}

$ javac HelloWorld.java
$ ls
HelloWorld.class  HelloWorld.java
$ java HelloWorld
Hello World