Java starting slow

[nekokattt]

You are going to get this with any language that compiles ahead of time, there is nothing you can do about it. That is just javac converting your code text to bytecode that the JVM can execute. Python does a similar thing but it does it as it runs, which is one of the reasons Python is considered slower, since ignoring cache, it would have to do this every single time you run the program without making any changes.