The name “java” doesn’t tell you anything, to get the detail, ps the java PID 12895 like this :ĥ01 42975 42960 0 12:41PM ? 0:29.84 /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/bin/java In Mac OSX, you can use sudo lsof -i :8080 | grep LISTEN to find out what program is listening on port 8080 : By default, most Java web application servers are listening on port 8080, and it can easily cause the popular 8080 port conflict error.