运用参数与返回类型

/*运用参数与返回类型
 * getter ,setter
 * 1.getter返回实例变量的值
 * 2.setter通过参数设置实例变量的值*/

 1 public class Yunyongcanshu {
 2     String brand;//品牌
 3     int numPickups;//拾音器
 4     boolean rockUseIt;//摇滚
 5
 6     String getBrand(){
 7         return brand;
 8     }
 9     void  setBrand(String aBrand){
10         brand = aBrand;
11     }
12     int getNumPickups(){
13         return numPickups;
14     }
15     void setNumPickups(int num){
16         numPickups = num;
17     }
18     boolean getRockUseIt(){
19         return rockUseIt;
20     }
21     void setRockUseIt(boolean yesOrno){
22         rockUseIt = yesOrno;
23     }
24
25     public static void main(String[] args){
26         Yunyongcanshu guitar = new Yunyongcanshu();
27         guitar.setBrand("纵向科技");
28         guitar.setNumPickups(3);
29         //guitar.setNumPickups(6);
30         guitar.setRockUseIt(true);
31
32         System.out.println("吉他牌子是："+guitar.getBrand());
33         System.out.println("吉他的pickup数目是："+guitar.getNumPickups());
34         System.out.println("是否属于摇滚明星的吉他："+guitar.getRockUseIt());
35     }
36
37 }