/**  * * @ClassName: GolfBall * @Description: 高尔夫球类 * @date 2012-4-5 下午10:11:30 */ class GolfBall{
   private String brand; //品牌     private String make;  //型号     public GolfBall(String brand, String make) {
   super(); this.brand = brand; this.make = make;     } public String getBrand() {
   return brand;     } public void setBrand(String brand) {
   this.brand = brand;     } public String getMake() {
   return make;     } public void setMake(String make) {
   this.make = make;     }     @Override public boolean equals(Object obj) {
   if(this == obj) return true; if(obj!=null && getClass() == obj.getClass()){
               GolfBall gb = (GolfBall)obj; if(this.brand.equals(gb.getBrand()) && this.make.equals(gb.getMake())){
   return true;             }         } return false;     }

public class EqualDemo {
   public static void main(String[] args) {
           GolfBall gb1 = new GolfBall("谢仕玲", "女");         GolfBall gb2 = new GolfBall("谢仕玲","女"); if(gb1.equals(gb2)){
               System.out.println("的确是女的!");         }else{
               System.out.println("不是女的!");         }     } }