If this is a linux vserver or root server, you can use the “screen” tool to access the minecraft console again. Create a new startup script (start.sh) in the server directory to launch the JAR: #!/bin/sh screen -d -m -S “minecraft_screen” java -Xmx1024M -Xms1024M -jar minecraft_server.1.15.2.jar nogui Open your terminal and execute the following in … Read more
(Is it because this is Java and therefore I shouldn’t be doing evil nonportable obsolete things like touching my environment?) I think you’ve hit the nail on the head. A possible way to ease the burden would be to factor out a method and pass any ProcessBuilders through it before starting them. Also, you probably already … Read more
Here are some various bits of code you can use to accomplish this. Create array Increment a position in the array Print histogram Here are some helper functions as well. Code should be modified as needed.
You need to convert sc.nextLine into int
There is a concurrent list implementation in java.util.concurrent. CopyOnWriteArrayList in particular.
You compiled your jar with a JDK version superior to the JDK used to launch the jar file (you might have compiled with 1.7 and try to run it with 1.6). 2 solutions: If you don’t use specific features of the JDK you use to compile, set its target to the previous version (in the … Read more
From a quick google: There is also one specifier that doesn’t correspond to an argument. It is “%n” which outputs a line break. A “\n” can also be used in some cases, but since “%n” always outputs the correct platform-specific line separator, it is portable across platforms whereas”\n” is not. Please refer https://docs.oracle.com/javase/tutorial/java/data/numberformat.html Original source
If you check the API for List you’ll notice it says: Being an interface means it cannot be instantiated (no new List() is possible). If you check that link, you’ll find some classes that implement List: All Known Implementing Classes: AbstractList, AbstractSequentialList, ArrayList, AttributeList, CopyOnWriteArrayList, LinkedList, RoleList, RoleUnresolvedList, Stack, Vector Some of those can be instantiated (the ones that are not defined as abstract class). Use their links to know more about them, I.E: to … Read more
When is while(true) true, and when is it false? It’s always true, it’s never false. Some people use while(true) loops and then use break to exit them when a certain condition is true, but it’s generally quite sloppy practice and not recommended. Without the use of break, return, System.exit(), or some other such mechanism, it will keep looping forever.
String.EMPTY is 12 characters, and “” is two, and they would both be referencing exactly the same instance in memory at runtime. I’m not entirely sure why String.EMPTY would save on compile time, in fact I think it would be the latter. Especially considering Strings are immutable, it’s not like you can first get an empty String, and perform some operations … Read more