slotList = new ArrayList<ValueType>();
slotList = new ArrayList<ValueType>(numLocals + DEFAULT_STACK_CAPACITY);
	public Frame(int numLocals) {		this.numLocals = numLocals;		slotList = new ArrayList<ValueType>();		for (int i = 0; i < numLocals; ++i)			slotList.add(getDefaultValue());		isTop = false;		isBottom = false;	}