Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.weib.concert; import com.weib.concert.beans.cd.CD; import org.springframework.beans.factory.annotation.Autowired; /** * * @author zhangjingwei */ public class CDPlayer { private CD cd; @Autowired public void setCD(CD cd) { this.cd = cd; } public void playAll() { this.cd.pull(); this.cd.play(); this.cd.push(); } public void playShuffle() { this.cd.pull(); for (int i = 0; i < 20; i++) { int index = (int) Math.floor(Math.random() * (double) this.cd.getTrackNumber()); this.cd.play(index); } this.cd.push(); } }