Snippet for getting the ping of a player using reflection

ReflectPing.java

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;

public final class ReflectPing {
	private String nmsver;
	private Class<?> cpc, epc;
	private Method hm;
	private Field pf;
	
	public ReflectPing(Plugin plugin) {
		nmsver = plugin.getServer().getClass().getPackage().getName();
		nmsver = nmsver.substring(nmsver.lastIndexOf(".") + 1);
		try {
			cpc = Class.forName("org.bukkit.craftbukkit." + nmsver + ".entity.CraftPlayer");
			epc = Class.forName("net.minecraft.server." + nmsver + ".EntityPlayer");
			
			hm = cpc.getDeclaredMethod("getHandle", new Class<?>[] {});
			pf = epc.getDeclaredField("ping");
		} catch (NoSuchMethodException | SecurityException | NoSuchFieldException | ClassNotFoundException e) {
			e.printStackTrace();
		}
	}
	
	public int getPing(Player player) {
		try {
			Object cp = cpc.cast(player);
			Object ep = hm.invoke(cp);
			return pf.getInt(ep);
		} catch (ClassCastException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
			e.printStackTrace();
			return -1;
		}
	}
}