How do I access a private variable from a method?

Question

currentColor = getCarColor(this.car.color)

这里的color是私有的，而getCarColor是一个方法，我如何访问变量color ？

Answer 1

You should not be accessing private variables directly: they are made private for a reason.

The proper way to do it is to add a public accessor method for the color to the car:

class Car {
    private Color color;
    // Add this method:
    public Color getColor() { return color; }
}