polo@ubuntu:~/Desktop$ java -version
openjdk version "1.8.0_292"
OpenJDK Runtime Environment (build 1.8.0_292-8u292-b10-0ubuntu1~18.04-b10)
OpenJDK 64-Bit Server VM (build 25.292-b10, mixed mode)
polo@ubuntu:~/Desktop$ java -jar fofaviewer.jar
Error: Could not find or load main class org.fofaviewer.main.MainApp
polo@ubuntu:~/Desktop$ java -version openjdk version "1.8.0_292" OpenJDK Runtime Environment (build 1.8.0_292-8u292-b10-0ubuntu1~18.04-b10) OpenJDK 64-Bit Server VM (build 25.292-b10, mixed mode) polo@ubuntu:~/Desktop$ java -jar fofaviewer.jar Error: Could not find or load main class org.fofaviewer.main.MainApp