大老帮帮我，任务一求了

Question

Answer 1

```java

public class Phone {
    private String brand;
    private String type;
    private String os;
    private String price;
    private String memory;

    public Phone() {
    }

    public Phone(String brand, String type, String os, String price, String memory) {
        this.brand = brand;
        this.type = type;
        this.os = os;
        this.price = price;
        this.memory = memory;
    }

    public void about(){
        System.out.println("显示手机信息");
        System.out.println("品牌为："+brand);
        System.out.println("型号："+type);
        System.out.println("系统："+os);
        System.out.println("价格："+price);
        System.out.println("内存："+memory);
    }

    public void call(String no){
        System.out.println("玩"+no+"游戏");
    }

    public void playMusic(String song){
        System.out.println("听"+song+"歌曲");
    }

    public void downLoadMusic(String song){
        System.out.println("下载"+song+"歌曲");
    }
}

```