Mushphang Posted July 8, 2017 Share Posted July 8, 2017 (edited) Hi everyone, sorry for the noob question. But I'm simply trying to get other classes to work from the main class. I can't figure out what I'm doing wrong.. Once the code runs it thows an error when trying to send a log in the Tester class. Main: public Tester g = new Tester(); public String stateT; @Override public void onStart() { log("test1"); } private enum State { TEST, WAIT }; private State getState() { if (1 == 1) return State.TEST; return State.WAIT; } @Override public int onLoop() throws InterruptedException { switch (getState()) { case TEST: log("test2"); g.logTest(); case WAIT: break; } return random(200, 300); } @Override public void onExit() { log(""); } @Override public void onPaint(Graphics2D g) { } } Tester Class: public class Tester { private MethodProvider ggg; public Tester(MethodProvider ggg) { this.ggg = ggg; } public Tester() { } public void logTest() { ggg.log("test222222222222"); NPC rGuide = ggg.npcs.closest("RuneScape Guide"); ggg.log(rGuide); } } Thanks in advance for any help! Edited July 8, 2017 by Mushphang Quote Link to comment Share on other sites More sharing options...
Explv Posted July 8, 2017 Share Posted July 8, 2017 (edited) @Mushphang you are not passing the MethodProvider parameter to your Tester class, you are calling the empty constructor. This means that when you call logTest, a NullPointerException will be thrown as the ggg variable is null. You should initialize your Tester instance in onStart instead, and pass a reference to a MethodProvider instance. As your main class extends MethodProvider, you can pass "this" as the parameter. Edited July 8, 2017 by Explv 3 Quote Link to comment Share on other sites More sharing options...
Mushphang Posted July 8, 2017 Author Share Posted July 8, 2017 (edited) 15 minutes ago, Explv said: You should initialize your Tester instance in onStart instead, and pass a reference to MethodProvider. so something like this? public void onStart() { log("test1"); Tester g = new Tester(this); } edit: oh didn't see your edit, but that did it! much appreciated! I declared the public Tester Test = new Tester(this); at a global level versus on start, not sure if that's an issue there at all. Edited July 8, 2017 by Mushphang Quote Link to comment Share on other sites More sharing options...
Explv Posted July 8, 2017 Share Posted July 8, 2017 9 minutes ago, Mushphang said: so something like this? public void onStart() { log("test1"); Tester g = new Tester(this); } Well you will still need to store the variable globally, otherwise you won't be able to access it outside of the onStart method. Declare the variable globally, but initialise it in onStart. Quote Link to comment Share on other sites More sharing options...
Apaec Posted July 8, 2017 Share Posted July 8, 2017 7 minutes ago, Mushphang said: so something like this? public void onStart() { log("test1"); Tester g = new Tester(this); } Tester.java: public class Tester { private final Script script; public Tester(Script script) { this.script = script; } public void Print(String message) { script.log(message); } } Your script main public void onStart() { Tester tester = new Tester(this) tester.print("hello"); } Wrote it in the reply box so sorry if there are any typos or if I missed anything. Hopefully that cleared things up a bit! -Apa Quote Link to comment Share on other sites More sharing options...
Mushphang Posted July 8, 2017 Author Share Posted July 8, 2017 3 minutes ago, Explv said: Well you will still need to store the variable globally, otherwise you won't be able to access it outside of the onStart method. Declare the variable globally, but initialise it in onStart. That did it! Thank you so much for your help, you have no idea how much confusion you cleared up. Quote Link to comment Share on other sites More sharing options...