listing15-13_mover.java_float

着几乎所有智能机厂商都将有自己配套的App Store,甚至并非智能手机制造商的三星也有意加入本次混战. 当然,我们也不能忘记苹果最先从iTunes中得到的灵感,从而带来了应用程序商店,一个正确

// Listing 15-13. A Simple Floating-Point Calculation


public class Mover {

	private int step;
	private final int steps;
	private final float distancePerStep;

	public Mover( int distance, int steps ) {
		this.steps = steps;
		this.distancePerStep = (float) distance / (float) steps;
	}

	public int moveForward() {
		this.step++;
		if ( step > this.steps ) {
			this.step = 0;
		}
		return (int) ( this.step * this.distancePerStep );
	}
}