Write a script like this one
#!/bin/bash
cd \"$(dirname \"$0\")\"
java -XX:MaxDirectMemorySize=1G -XX:hashCode=5 -Dsun.lang.ClassLoader.allowArraySyntax=true -Djdk.map.althashing.threshold=128 -Djava.nio.channels.spi.SelectorProvider=sun.nio.ch.EPollSelectorProvider -Djava.awt.headless=true -Dsun.awt.keepWorkingSetOnMinimize=true -jar StarMade.jar -server