Solved Why is my add-on not working

[jaylawl]

I'm taking my first steps in writing actual java. Messing around with skript-mirror long enough gave me the balls to try, good times. This code works, there are no errors, everything compiles fine. But the expression i added is not registered ingame - skript says "can't understand this expression":

package com.jaylawl.hellofucks;

import ch.njol.skript.Skript;
import ch.njol.skript.lang.ExpressionType;
import org.bukkit.Bukkit;
import org.bukkit.plugin.java.JavaPlugin;
import com.jaylawl.hellofucks.elements.expressions.ExprBreak;

public class HelloFucks extends JavaPlugin {

    public HelloFucks() {}

    @Override
    public void onEnable() {
        if ((Bukkit.getPluginManager().getPlugin("Skript") != null) && (Skript.isAcceptRegistrations())) {
            getLogger().info("Skript found; enabling...");
            Skript.registerAddon(this);
            Skript.registerExpression(ExprBreak.class, String.class, ExpressionType.SIMPLE, "(br|break)");
        }
        else {
            getLogger().info("Skript was not found: disabling");
            Bukkit.getPluginManager().disablePlugin(this);
        }
    }

    @Override
    public void onDisable() {}

}

###################################################

package com.jaylawl.hellofucks.elements.expressions;

import org.bukkit.event.Event;

import ch.njol.skript.lang.Expression;
import ch.njol.skript.lang.SkriptParser.ParseResult;
import ch.njol.skript.lang.util.SimpleExpression;
import ch.njol.util.Kleenean;
import javax.annotation.Nullable;

public class ExprBreak extends SimpleExpression<String> {

    @Override
    public Class<? extends String> getReturnType() {
        return null;
    }

    @Override
    public boolean isSingle() {
        return true;
    }

    @Override
    public boolean init(Expression<?>[] exprs, int matchedPattern, Kleenean isDelayed, ParseResult parser) {
        return false;
    }

    @Override
    public String toString(@Nullable Event event, boolean debug) {
        return null;
    }

    @Override
    @Nullable
    protected String[] get(Event event) {
        return new String[] {"fuck"};
        //return new String[] {System.getProperty("line.separator")};
    }

}

Java is confusing enough for beginners - so please, emphasize on what i'm doing wrong, not on how everything else could be more optimal

 

[Donut]

looks like you stopped after a few paragraphs of lime's expression tutorial... the null and false returns were just placeholders until he explained each method

 

[jaylawl]

looks like you stopped after a few paragraphs of lime's expression tutorial... the null and false returns were just placeholders until he explained each method

That makes sense, i was doing a weird mixture between trying everything from scratch by reading existing code - and then i "gave up" and went into lime's tutorial. I'm gonna go back to that and find what i missed, thank you

/edit:
Went back to the steps i accidentally skipped -now it works!