public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public double getScore() {
return score;
}
public void setScore(double score) {
this.score = score;
}
public Student() {
}
public Student(String name, int age, double score) {
this.name = name;
this.age = age;
this.score = score;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + age;
result = prime * result + ((name == null) ? 0 : name.hashCode());
long temp;
temp = Double.doubleToLongBits(score);
result = prime * result + (int) (temp ^ (temp >>> 32));
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Student other = (Student) obj;
if (age != other.age)
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
if (Double.doubleToLongBits(score) != Double
.doubleToLongBits(other.score))
return false;
return true;
}
}[/code][code=java] public static void main(String[] args) {
Collection collections = new HashSet();
Student s1 = new Student ("a",3,3);
Student s2 = new Student ("b",5,5);
Student s3 = new Student ("a",3,3);