import org.bukkit.entity.SpectralArrow; //导入依赖的package包/类
@Override
@Nullable
protected Number[] get(Event e) {
	if (e instanceof SpectralArrow) {
		return new Number[]{((SpectralArrow)arrow.getSingle(e)).getGlowingTicks()};
	} else {
		return new Number[]{0};
	}
}
 

import org.bukkit.entity.SpectralArrow; //导入依赖的package包/类
@Override
public void change(Event e, Object[] delta, Changer.ChangeMode mode){
	if (e instanceof SpectralArrow) {
		Number data = (Number)delta[0];
		if (mode == ChangeMode.SET) {
			((SpectralArrow)arrow.getSingle(e)).setGlowingTicks(data.intValue());
		} else if (mode == ChangeMode.ADD) {
			((SpectralArrow)arrow.getSingle(e)).setGlowingTicks(((SpectralArrow)arrow.getSingle(e)).getGlowingTicks() + data.intValue());
		} else if (mode == ChangeMode.REMOVE) {
			((SpectralArrow)arrow.getSingle(e)).setGlowingTicks(((SpectralArrow)arrow.getSingle(e)).getGlowingTicks() - data.intValue());
		}
	}
	return;
}